Marine Science Quiz Questions And Answers
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Oceans, rivers, and other water bodies are a magnificent part of this world. Are you ready for some marine science quiz questions and answers? The study of marine life, or we can say water life, and organisms in the ocean, involves biological and physical sciences. It is said that there is so much to explore in marine life that hasn't been explored yet. Here, you will learn more about the marine world. Let's see how much you really know.
Questions and Answers
- 1.
The "habitat" includes all of the following except...
- A.
Salinity of the water
- B.
Temperature of the water
- C.
Amount of light
- D.
Tides, waves, and currents
- E.
Types of animal and plant species
Correct Answer
E. Types of animal and plant speciesExplanation
The habitat refers to the natural environment in which a particular organism or species lives. It encompasses various factors such as salinity and temperature of the water, amount of light, and tides, waves, and currents. These factors directly affect the survival and behavior of organisms in a specific habitat. However, the types of animal and plant species present in a habitat are not considered as part of the habitat itself, but rather as the result of the habitat's characteristics and conditions.Rate this question:
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- 2.
Starting from the least complex to the most, the correct order is...
- A.
Individual, community, population, ecosystem
- B.
Individual, population, community, ecosystem
- C.
Population, individual, community, ecosystem
- D.
Ecosystem, community, population, ecosystem
Correct Answer
B. Individual, population, community, ecosystemExplanation
The correct order is individual, population, community, ecosystem. This order follows the hierarchical structure of ecological organization. An individual refers to a single organism, while a population consists of a group of individuals of the same species in a given area. A community includes all populations of different species living together in a specific area. Lastly, an ecosystem encompasses both the biotic (living) and abiotic (non-living) components of an environment, including all the communities and their interactions.Rate this question:
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- 3.
The ocean and the continents were once moving but are now stationary.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement is false because the ocean and the continents are not stationary. They are constantly moving due to tectonic plate movements. The Earth's crust is divided into several large plates that float on the semi-fluid mantle below. These plates are constantly moving, causing the continents to shift and the ocean floor to spread or collide. This movement, known as plate tectonics, is responsible for earthquakes, volcanic activity, and the formation of mountain ranges.Rate this question:
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- 4.
The Earth is 4.6 billion years old. The continents have been covered by water many, many times in the past as the climate of Earth is very dynamic. (changeable)
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The explanation for the correct answer "True" is that the statement aligns with scientific evidence and geological studies. The Earth is indeed estimated to be around 4.6 billion years old based on various dating methods. Additionally, the continents have experienced multiple episodes of being covered by water throughout Earth's history due to factors such as sea level changes, tectonic plate movements, and climate variations. This dynamic nature of the Earth's climate has led to the inundation of landmasses by water on numerous occasions.Rate this question:
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- 5.
New ocean crust is created at ________________ and recycled at _____________
- A.
Trenches, abyssal plain
- B.
The continental margin, deep ocean trenches
- C.
The mid-ocean ridge, subduction zones
- D.
Subsea volcanoes, the mid-ocean ridge
- E.
Subduction zones, trenches
Correct Answer
C. The mid-ocean ridge, subduction zonesExplanation
New ocean crust is created at the mid-ocean ridge and recycled at subduction zones. The mid-ocean ridge is a divergent boundary where two tectonic plates move away from each other, allowing magma to rise and create new oceanic crust. Subduction zones, on the other hand, are convergent boundaries where one tectonic plate is forced beneath another. This process allows the older oceanic crust to be recycled back into the mantle, completing the cycle of ocean crust formation and destruction.Rate this question:
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- 6.
An island is...
- A.
A small continent
- B.
A landmass unconnected to the ocean floor, adrift on the sea
- C.
A seamount that has emerged above sea level
- D.
A tropical paradise
- E.
A small piece of crust that has been disconnected from the continent
Correct Answer
C. A seamount that has emerged above sea levelExplanation
An island is a seamount that has emerged above sea level. This means that it was originally underwater but has risen to the surface due to geological processes. Islands can be formed through volcanic activity or by the movement of tectonic plates. They are typically surrounded by water and are separate from the ocean floor. Islands can vary in size, ranging from small pieces of crust that have been disconnected from the continent to larger landmasses. Some islands may indeed be tropical paradises, but this is not a defining characteristic of all islands.Rate this question:
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- 7.
Which is false?
- A.
From the perspective of space, we have one world ocean
- B.
The Eart is 71% covered by oceans at the present time
- C.
Salts and elements in the ocean include sodium chloride, magnesium chloride, calcium chloride and iodine
- D.
The size and distribution of oceans has changed throughout geologic history
- E.
Sea level falls when glaciers melt
Correct Answer
E. Sea level falls when glaciers meltExplanation
Sea level does not fall when glaciers melt; it actually rises. When glaciers melt, the water from the glaciers flows into the ocean, causing an increase in the volume of water and subsequently raising the sea level.Rate this question:
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- 8.
Population sizes are controlled by all of the following except...
- A.
Species eating each other
- B.
Environmental pollution
- C.
Seasonal changes and storms
- D.
Diseases
- E.
All of these are population controls. There is no exception
Correct Answer
E. All of these are population controls. There is no exceptionExplanation
All of the options listed, including species eating each other, environmental pollution, seasonal changes and storms, and diseases, are factors that can control population sizes. There is no exception to this, meaning that all of these options are valid population controls.Rate this question:
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- 9.
Dinoflagellates ( a unicellular, autotroph) require nitrate. If the available supply of nitrate is not enough to sustain the population of dinoflagellates, the nitrate is considered to be
- A.
A limiting resource
- B.
An abiotic factor
- C.
Resource partitioning
- D.
An environmental adaptation
- E.
Nutrient regeneration
Correct Answer
A. A limiting resourceExplanation
Dinoflagellates are unicellular organisms that require nitrate to survive. If the available supply of nitrate is not sufficient to support the population of dinoflagellates, then nitrate becomes a limiting resource. This means that the growth and survival of dinoflagellates are restricted by the availability of nitrate. Other options such as abiotic factor, resource partitioning, environmental adaptation, and nutrient regeneration do not accurately describe the relationship between dinoflagellates and nitrate.Rate this question:
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- 10.
There is an undersea volcanic chain deep in the oceans.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement states the existence of an undersea volcanic chain deep in the oceans. The answer "true" confirms the statement's accuracy.Rate this question:
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- 11.
A hydrothermal vent is too extreme an environment for plants and animals to survive.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement is false because hydrothermal vents are actually home to a unique ecosystem that supports a variety of organisms. These vents are located in the deep ocean where hot water and minerals are released from the Earth's crust, creating a harsh environment with high temperatures, extreme pressure, and toxic chemicals. However, specialized organisms such as tube worms, shrimp, and bacteria have adapted to these conditions and thrive in this extreme environment.Rate this question:
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- 12.
The sediments taht cover the ocean floor come from...
- A.
The continent as weathered fragments of rock that rivers carry out to sea
- B.
The shells of marine organisms that gather over time on the ocean floor
- C.
Neither a nor b
- D.
Both a and b
Correct Answer
D. Both a and bExplanation
The sediments that cover the ocean floor come from both the continent as weathered fragments of rock that rivers carry out to sea, and the shells of marine organisms that gather over time on the ocean floor.Rate this question:
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- 13.
One species eliminates another by outcompeting it. This is called...
- A.
Resource partitioning
- B.
Competitive exclusion
- C.
Interspecific competition
- D.
Intraspecific competition
- E.
Predatory behavior
Correct Answer
B. Competitive exclusionExplanation
Competitive exclusion refers to the phenomenon where one species outcompetes another species for limited resources, leading to the elimination or extinction of the weaker species. This occurs when two species have similar ecological requirements and compete for the same resources, such as food, water, or habitat. The species that is more efficient or better adapted at utilizing these resources will have a competitive advantage and eventually exclude or eliminate the other species from the ecosystem.Rate this question:
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- 14.
Sharing resources is called...
- A.
Competitive exclusion
- B.
Interspecific competition
- C.
Symbiosis
- D.
Resource partitioning
- E.
Biodiversity
Correct Answer
D. Resource partitioningExplanation
Resource partitioning refers to the division of limited resources among different species in order to reduce competition. This allows species to coexist by utilizing different resources or occupying different niches within the same ecosystem. By dividing resources, species are able to reduce direct competition and increase their chances of survival. Therefore, resource partitioning is the term used to describe the sharing of resources among different species.Rate this question:
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- 15.
Which is false regarding copepods?
- A.
They are microscopic
- B.
They are crustaceans
- C.
They have an exoskeleton of calcium carbonate
- D.
They are primary producers
- E.
They are a critical link in the marine food chain
Correct Answer
D. They are primary producersExplanation
Copepods are not primary producers because they do not have the ability to produce their own food through photosynthesis. Instead, they are consumers that feed on phytoplankton and other organic matter in the water. They are microscopic crustaceans with an exoskeleton of calcium carbonate and play a crucial role in the marine food chain as a food source for many larger organisms.Rate this question:
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- 16.
Animals that eat other animals are herbivores.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement "animals that eat other animals are herbivores" is incorrect. Animals that eat other animals are called carnivores, not herbivores. Herbivores are animals that only consume plants and vegetation.Rate this question:
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- 17.
Sometimes predators affect species other than their prey by their actions. This is called...
- A.
An ecological niche
- B.
An indirect interaction
- C.
Predation
- D.
A defense mechanism
- E.
A competitive role
Correct Answer
B. An indirect interactionExplanation
An indirect interaction refers to the impact that predators have on species other than their prey through their actions. This can include altering the behavior, population dynamics, or distribution of other species in the ecosystem. It highlights the interconnectedness and complexity of ecological relationships, where the effects of one species can ripple through the entire ecosystem.Rate this question:
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- 18.
The carrying capacity is...
- A.
A maximum population that can survive given the available resources in an environment
- B.
The amount of nutrients that are transferred tot he surface during the spring blossom
- C.
The biomass of copepods that are crucial to the marine food web
- D.
The weight of an average member of a species
- E.
The necessary amount of DOM to ensure the survival of decomposers
Correct Answer
A. A maximum population that can survive given the available resources in an environmentExplanation
The carrying capacity refers to the maximum population size that can be supported by the available resources in a given environment. It represents the balance between the population's needs and the resources available to meet those needs. When a population exceeds the carrying capacity, there is a lack of resources and the population may experience a decline or struggle to survive. Therefore, the correct answer is "a maximum population that can survive given the available resources in an environment."Rate this question:
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- 19.
Which is false about Copepods and Jellyfish?
- A.
Copepods are very small and jellyfish are much larger
- B.
They are both planktonic
- C.
They are on the same level of the trophic pyramid we drew in class
- D.
Two of the above are false
- E.
A-C are all true
Correct Answer
E. A-C are all trueExplanation
Copepods and jellyfish are both planktonic, meaning they are organisms that drift in the water column. Additionally, they are both on the same level of the trophic pyramid, which represents the feeding relationships between different organisms in an ecosystem. However, the statement that copepods are very small and jellyfish are much larger is false. Copepods are indeed small, typically measuring a few millimeters in length, but jellyfish can vary in size, with some species being smaller than copepods and others being much larger.Rate this question:
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- 20.
"Plankton" means...
- A.
Microscopic plant
- B.
Animal at the base of the food chain
- C.
Marine, organic matter
- D.
Primary producer
- E.
Drifter
Correct Answer
E. DrifterExplanation
The term "plankton" refers to organisms that drift in the water, unable to swim against the current. These organisms can be either plants or animals, and they form the base of the food chain in aquatic ecosystems. They are often microscopic in size and are an important source of food for larger organisms. Therefore, the term "drifter" accurately describes the nature of plankton, as they are carried by the currents and do not have the ability to actively move against them.Rate this question:
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- 21.
Over time, predators adapt and get better at catching their prey. At the same time, the prey adapts and gets better at escaping the predator through new and improved defense mechanisms. This is called...
- A.
Coevolution
- B.
Dynamic change
- C.
Role reversal
- D.
Symbiotic behavior
- E.
Competitive exclusion
Correct Answer
A. CoevolutionExplanation
Over time, predators and prey engage in a process of reciprocal adaptation, where predators evolve better hunting strategies and prey develop improved defense mechanisms. This process is known as coevolution, as both species influence each other's evolution. It is a dynamic relationship that leads to continuous changes in the traits and behaviors of both predators and prey. This term captures the idea that the evolution of one species is dependent on and influenced by the evolution of another species.Rate this question:
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- 22.
The "Mariana" is...
- A.
A type of shrimp
- B.
An island
- C.
A trench
- D.
A marine research vessel
- E.
A schooling fish
Correct Answer
C. A trenchExplanation
The Mariana is a trench. The Mariana Trench is the deepest part of the world's oceans, located in the western Pacific Ocean. It is a crescent-shaped trench that reaches a depth of approximately 36,070 feet (10,994 meters) at its lowest point, known as the Challenger Deep. The Mariana Trench is known for its extreme depth and unique geological features, making it an important area for scientific research and exploration.Rate this question:
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- 23.
The tropics have a much larger plankton bloom than the North Atlantic Ocean.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement is false because the North Atlantic Ocean actually has a larger plankton bloom than the tropics. This is due to the presence of nutrient-rich waters and upwelling currents in the North Atlantic, which support the growth of plankton. The colder waters in the North Atlantic also help to trap nutrients near the surface, further promoting plankton growth. In contrast, the tropics have warmer waters and less nutrient availability, resulting in a smaller plankton bloom.Rate this question:
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- 24.
Giant tapeworms living in the guts of whales is a good example of...
- A.
Commensal symbiosis
- B.
Mutual symbiosis
- C.
Facultative symbiosis
- D.
Parasitic symbiosis
- E.
Obligate symbiosis
Correct Answer
D. Parasitic symbiosisExplanation
Giant tapeworms living in the guts of whales is an example of parasitic symbiosis because the tapeworms benefit from living in the whale's gut, where they find a suitable environment and a constant food source, while the whale is harmed by the presence of the tapeworms, as they can cause damage to its digestive system and steal nutrients. This relationship is considered parasitic because one organism benefits at the expense of the other.Rate this question:
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- 25.
Intraspecific competition could take place between tuna and sharks.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Intraspecific competition refers to competition between individuals of the same species. Tuna and sharks belong to different species, therefore they cannot engage in intraspecific competition. Instead, they would be involved in interspecific competition, which occurs between individuals of different species. Thus, the given statement is false.Rate this question:
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- 26.
Cleaning associations are common in polar waters.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement suggests that cleaning associations are common in polar waters. However, the correct answer is false, indicating that cleaning associations are not common in polar waters. This implies that there is a lack of evidence or research supporting the presence of cleaning associations in polar waters.Rate this question:
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- 27.
With reference to a food web, is it possible for a single species to be in two different consumer levels?
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
In a food web, it is possible for a single species to be in two different consumer levels. This can happen when a species has multiple food sources and consumes organisms from different trophic levels. For example, a species that feeds on both primary producers (plants) and primary consumers (herbivores) would be considered to be in two different consumer levels. This allows for more complex interactions and energy flow within the ecosystem.Rate this question:
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- 28.
Organisms that break down dead organic material into smaller molecules are called...
- A.
Phytoplankton
- B.
Zooplankton
- C.
DOM
- D.
Decomposers
- E.
Nutrient regenerators
Correct Answer
D. DecomposersExplanation
Decomposers are organisms that break down dead organic material into smaller molecules. They play a crucial role in the ecosystem by recycling nutrients back into the environment. Through the process of decomposition, decomposers break down complex organic matter into simpler forms, such as carbon dioxide, water, and nutrients. This process helps to release trapped nutrients and make them available for other organisms to use. Decomposers include bacteria, fungi, and some types of insects and worms.Rate this question:
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- 29.
The average amount of energy passed from one trophic level to another is about...
- A.
15%
- B.
20%
- C.
5%
- D.
10%
- E.
25%
Correct Answer
D. 10%Explanation
The correct answer is 10%. This is because of the energy transfer efficiency between trophic levels in an ecosystem. Only about 10% of the energy stored in the biomass of one trophic level is passed on to the next trophic level. The rest of the energy is lost as heat or used for metabolic processes. This phenomenon is known as the 10% rule and helps to explain why food chains are typically limited in length and why there are fewer individuals at higher trophic levels.Rate this question:
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- 30.
A good example of a filter feeder is...
- A.
A mackerel
- B.
An osprey
- C.
Phytoplankton
- D.
A bivalve
- E.
A tuna
Correct Answer
D. A bivalveExplanation
A bivalve is a good example of a filter feeder because it has a specialized feeding mechanism that allows it to filter small particles and organisms from the water. Bivalves have two shells and a muscular foot that they use to burrow into the sediment or attach to rocks. They have gills that are used to filter water, extracting food particles such as phytoplankton and other organic matter. This feeding strategy allows bivalves to obtain nutrients efficiently from their environment.Rate this question:
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- 31.
Organic material that is not eaten at each level of the trophic structure...
- A.
Is lost and never sued again
- B.
Is called DOM
- C.
Is broken down by decomposers into nutrients, CO2, and water
- D.
A and b are correct
- E.
B and c are correct
Correct Answer
E. B and c are correctExplanation
The correct answer is b and c are correct. Organic material that is not eaten at each level of the trophic structure is called DOM (dissolved organic matter). This material is broken down by decomposers into nutrients, CO2, and water. Therefore, both options b and c accurately describe what happens to the organic material that is not consumed at each trophic level.Rate this question:
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- 32.
Pelagic means...
- A.
The ocean bottom
- B.
The vegetation in the ocean
- C.
The water column
- D.
A sandy surface such as a tidal flat
- E.
A rocky surface such as a coral reef
Correct Answer
C. The water columnExplanation
Pelagic refers to the water column in the ocean, which includes all the water between the surface and the ocean floor. It does not refer to the ocean bottom, vegetation, sandy surfaces, or rocky surfaces. The term pelagic is used to describe organisms and processes that occur in the open water, away from the shoreline or benthic habitats.Rate this question:
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- 33.
A thermocline is....
- A.
The separation between the continental shelf and slope
- B.
A density change in sea water due to a change in salinity
- C.
A barrier/zone between warm and cold water in the water column
- D.
A temperature adjustment that allows marine organisms to live in cold waters
- E.
An increase in temperature as depth increases
Correct Answer
C. A barrier/zone between warm and cold water in the water columnExplanation
The correct answer is a barrier/zone between warm and cold water in the water column. A thermocline refers to a distinct layer in the ocean where there is a rapid change in temperature with depth. It acts as a barrier or zone separating the warmer surface water from the colder deep water. This temperature gradient can have significant effects on the distribution of marine organisms and oceanic processes.Rate this question:
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- 34.
_______________ means organism carried by the current
- A.
Plankton
- B.
Benthos
- C.
Nekton
- D.
Abyssal
- E.
Tidal
Correct Answer
A. PlanktonExplanation
Plankton refers to the organisms that are carried by the current. They are typically small and drift along in bodies of water, unable to swim against the current. Plankton can include both plants (phytoplankton) and animals (zooplankton), and they form the base of the aquatic food chain. They play a crucial role in the ecosystem by providing food for larger organisms and by producing a significant amount of the Earth's oxygen through photosynthesis.Rate this question:
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- 35.
Neritic is the horizontal zone above the continental shelf and oceanic is beyond the continental shelf
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement is true because neritic refers to the zone above the continental shelf, which is the shallow area of the ocean extending from the coastline. This zone is characterized by abundant sunlight, nutrient-rich waters, and diverse marine life. On the other hand, oceanic refers to the zone beyond the continental shelf, which is deeper and farther away from the coastline. This zone is typically deeper, colder, and less productive compared to the neritic zone. Therefore, the statement accurately describes the horizontal distribution of these two zones in the ocean.Rate this question:
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- 36.
The abyssal plain is the ocean floor and it is fairly (not completely) flat and featureless
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement is true because the abyssal plain is indeed the flat and featureless area of the ocean floor. It is located in the deepest parts of the ocean and is characterized by its smooth and uniform topography. The abyssal plain is formed by the deposition of sediments over millions of years, creating a relatively flat surface devoid of significant geological features. However, it is important to note that while the abyssal plain is generally flat, it is not completely devoid of any irregularities or small-scale features.Rate this question:
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- 37.
Which is false regarding "spiny tricks"?
- A.
They can be used to make a species look menacing and thus scare away the predator
- B.
They can be used to display a threat to predators and enemies
- C.
They can be used to inflict wounds on predators and enemies
- D.
They can be sued to wedge and hide an individual in a tight space
- E.
None are false
Correct Answer
E. None are falseExplanation
The given answer states that none of the statements regarding "spiny tricks" are false. This means that all of the statements are true. Therefore, it can be concluded that "spiny tricks" can indeed be used to make a species look menacing and scare away predators, display a threat to predators and enemies, inflict wounds on predators and enemies, as well as wedge and hide an individual in a tight space.Rate this question:
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- 38.
The littoral zone and the intertidal zone are the same
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement is true because the littoral zone and the intertidal zone refer to the same area. These terms are used to describe the region of a shoreline that is exposed to both air and water, experiencing regular changes in water levels due to tides. This zone is home to a diverse range of organisms that have adapted to survive in this dynamic environment. Therefore, the littoral zone and the intertidal zone are interchangeable terms used to describe the same coastal area.Rate this question:
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- 39.
Primary production is very stable in a variety of environments in the ocean
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Primary production in the ocean is not stable in a variety of environments. It varies depending on factors such as nutrient availability, sunlight, temperature, and water depth. Different regions of the ocean have different levels of primary production due to variations in these factors. Therefore, the statement that primary production is very stable in a variety of ocean environments is false.Rate this question:
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- 40.
The "operculum" is....
- A.
The mouth
- B.
The anus
- C.
The lateral line
- D.
The gill cover
- E.
The spine
Correct Answer
D. The gill coverExplanation
The operculum is the correct answer because it refers to the gill cover in fish. The operculum is a bony flap that protects the delicate gills and helps with the process of respiration. It opens and closes to allow water to pass over the gills, allowing the fish to extract oxygen from the water.Rate this question:
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- 41.
Fish will actually wait in line at a cleaning station to take their turn?
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Fish will actually wait in line at a cleaning station to take their turn. This behavior is observed in certain species of fish, such as cleaner fish and client fish. Cleaner fish set up cleaning stations where they remove parasites and dead skin from other fish. Client fish recognize these stations and wait their turn to be cleaned. This behavior is beneficial for both parties as the cleaner fish get food and the client fish get rid of parasites.Rate this question:
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- 42.
Dorsal means______________.
- A.
Belly
- B.
Fin
- C.
Back
- D.
Head
- E.
Tip of tail
Correct Answer
C. BackExplanation
The term "dorsal" refers to the back of an animal or organism. It is the opposite of "ventral," which refers to the belly or underside. Therefore, the correct answer is "back."Rate this question:
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- 43.
Standing stock is the total biomass of all species in a given community at one time.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The explanation for the correct answer is that standing stock refers to the total biomass of a specific species or group of species in a given community at one time, rather than the total biomass of all species. Therefore, the statement that standing stock is the total biomass of all species in a given community at one time is false.Rate this question:
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- 44.
The main purpose of the case study on "Fish Intersexuality" is
- A.
To describe how male seahorses play an active role in reproduction
- B.
To describe types of pollution, particularly thermal pollution
- C.
To outline the wide range of sexual expression within the various species of fish
- D.
To point out that changes in fish sexuality may indicate environmental stressors such as pollution
- E.
To describe the variety of physical conditions such as light intensity, salinity, and temperature that impact fish
Correct Answer
D. To point out that changes in fish sexuality may indicate environmental stressors such as pollutionExplanation
The main purpose of the case study on "Fish Intersexuality" is to highlight the correlation between changes in fish sexuality and environmental stressors such as pollution. The study aims to demonstrate that alterations in fish sexuality can serve as an indicator of the presence of pollution in their environment. By examining the intersexuality phenomenon in fish, the study seeks to raise awareness about the potential negative impacts of pollution on aquatic ecosystems.Rate this question:
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- 45.
An "opportunistic" feeder is one...
- A.
Who may eat larval forms of their own predators
- B.
Who eats whatever is available
- C.
Who may eat larval forms of their own species
- D.
All of a-c are correct
- E.
Only two of a-c are correct
Correct Answer
D. All of a-c are correctExplanation
An "opportunistic" feeder is a type of feeder that takes advantage of any available food source. This means that they will eat larval forms of their own predators, larval forms of their own species, and whatever else is available for consumption. Therefore, all of the options a-c are correct in describing an opportunistic feeder.Rate this question:
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- 46.
"Spring bloom" refers to...
- A.
The blooming of tropical, marine plants
- B.
The dramatic increase of plankton in the spring in the North Atlantic
- C.
The phenomenon that precedes the red tide
- D.
The abundance of phytoplankton in tropical waters
- E.
The number of copepods that are born in the spring
Correct Answer
B. The dramatic increase of plankton in the spring in the North Atlantic -
- 47.
If a lobster scavenges food from the ocean bottom we could correctly call it..
- A.
A nektonic producer
- B.
A planktonic consumer
- C.
A benthic consumer
- D.
A neritic producer
- E.
An oceanic consumer
Correct Answer
C. A benthic consumerExplanation
A lobster that scavenges food from the ocean bottom is correctly called a benthic consumer. "Benthic" refers to the bottom of a body of water, and "consumer" indicates that the lobster consumes other organisms for food. This term accurately describes the lobster's feeding behavior and habitat.Rate this question:
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- 48.
In terms of biomass, you would expect to find more large schooling fish than small schooling fish
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
In terms of biomass, it is more likely to find more small schooling fish than large schooling fish. This is because small fish typically reproduce in larger numbers and have shorter lifespans, resulting in a higher overall biomass. Additionally, small fish are often prey for larger predators, which can further contribute to their higher numbers in terms of biomass. Therefore, the statement that there would be more large schooling fish than small schooling fish in terms of biomass is false.Rate this question:
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- 49.
In the open ocean, a shark looks up from deep in the ocean but can't see the mackerel because the silver belly (ventral surface) of the mackerel seems to disappear in the light of the sun in the shallower waters above. This is known as _____________
- A.
Aggressive mimicry
- B.
Camouflage
- C.
Disruptive coloration
- D.
Countershading
Correct Answer
D. CountershadingExplanation
Countershading is the phenomenon where an animal has a darker coloration on its upper side and a lighter coloration on its lower side. This coloring helps the animal blend in with its surroundings and provides camouflage. In the case of the mackerel, its silver belly appears to disappear in the sunlight when viewed from below, making it difficult for the shark to see it. This is an example of countershading, where the mackerel's coloration helps it avoid detection by predators.Rate this question:
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- 50.
_______________ describes how the continents and oceans have moved and changed location, size and distribution throughout Earth's geologic history
- A.
The National Oceanographic Institute
- B.
Continental Drift Theory
- C.
Plate Tectonic Theory
- D.
The United States Geologic Survey
- E.
Wood's Hole
Correct Answer
C. Plate Tectonic TheoryExplanation
The Plate Tectonic Theory is the correct answer because it explains how the continents and oceans have moved and changed over time. This theory states that the Earth's outer shell, or lithosphere, is divided into several large plates that float on the semi-fluid asthenosphere beneath them. These plates interact with each other at their boundaries, causing various geological phenomena such as earthquakes, volcanic activity, and the formation of mountain ranges. The theory also explains the process of seafloor spreading and subduction, which contribute to the movement and changing distribution of continents and oceans.Rate this question:
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Aug 27, 2023Quiz Edited by
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May 06, 2010Quiz Created by
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