Science 7 Practice Exam
Questions and Answers
- 1.
What are the basic needs of all living things
- A.
Food
- B.
Toys
- C.
Water
- D.
Habitat
- E.
A car
- F.
Air to breath
- G.
A TV
Correct Answer(s)
A. Food
C. Water
D. Habitat
F. Air to breathExplanation
The basic needs of all living things include food, water, habitat, and air to breathe. Food provides the necessary nutrients and energy for growth and survival. Water is essential for hydration and maintaining bodily functions. A suitable habitat provides shelter, protection, and resources for living organisms. Air is necessary for respiration, allowing organisms to take in oxygen and release carbon dioxide.Rate this question:
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- 2.
What is something adapted?
- A.
Something a living creatue is born with to help it survive in the inviroment
- B.
A gift
- C.
When you adopt a baby
- D.
When you go fishing
Correct Answer
A. Something a living creatue is born with to help it survive in the inviromentExplanation
The correct answer is "Something a living creature is born with to help it survive in the environment." This answer explains that adaptation refers to a characteristic or trait that living creatures are born with, which aids them in surviving in their surroundings. Adaptations can include physical features, behaviors, or physiological processes that enhance an organism's chances of survival and reproduction in a specific environment.Rate this question:
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- 3.
An ecosystem is the interaction between living and non-living things in a particular environment
- A.
False
- B.
True
Correct Answer
B. TrueExplanation
This statement is true because an ecosystem refers to the complex network of interactions between living organisms and their physical environment. It includes both the biotic (living) components, such as plants, animals, and microorganisms, as well as the abiotic (non-living) factors like air, water, soil, and climate. These interactions are crucial for the functioning and sustainability of the ecosystem, as they involve energy flow, nutrient cycling, and the maintenance of ecological balance.Rate this question:
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- 4.
When 2 species are in a relationship that lasts over time it is called
- A.
Parasitism
- B.
Mutualism
- C.
Symbiosis
- D.
Commensalism
Correct Answer
C. SymbiosisExplanation
Symbiosis refers to a long-term relationship between two different species. It can be beneficial, neutral, or harmful for both species involved. In this case, the question is asking for the term that describes a relationship that lasts over time, indicating a long-term association between two species. Therefore, the correct answer is symbiosis.Rate this question:
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- 5.
This is a relationship when 2 organisms both benifits
- A.
Parasitism
- B.
Mutualism
- C.
Symbiosis
- D.
Commensalism
Correct Answer
B. MutualismExplanation
Mutualism is the correct answer because it is a relationship where both organisms benefit. In mutualism, two organisms form a symbiotic relationship in which both individuals gain advantages such as food, protection, or reproduction. This type of relationship is characterized by cooperation and mutual support, where both organisms rely on each other for survival and reproduction.Rate this question:
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- 6.
This is a relationship when 1 organism benifits and 1 is harmed for example a tapeworm
- A.
Parasitism
- B.
Mutualism
- C.
Symbiosis
- D.
Commensalism
Correct Answer
A. ParasitismExplanation
Parasitism is a type of relationship where one organism benefits at the expense of another organism. In this relationship, the organism that benefits is called the parasite, while the organism that is harmed is called the host. The parasite relies on the host for survival and reproduction, often causing harm or disease to the host in the process. An example of parasitism is a tapeworm living in the intestines of its host, where it obtains nutrients at the expense of the host's well-being.Rate this question:
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- 7.
This is a relationship when 1 organism benifits and 1 is neither benifited or harmed
- A.
Parasitism
- B.
Mutualism
- C.
Symbiosis
- D.
Commensalism
Correct Answer
D. CommensalismExplanation
Commensalism is a relationship where one organism benefits while the other is neither benefited nor harmed. In this type of relationship, one organism takes advantage of the resources or shelter provided by the other organism without causing any harm or benefit to it. This is different from mutualism, where both organisms benefit, and parasitism, where one organism benefits at the expense of the other. Symbiosis is a broader term that encompasses all types of close and long-term relationships between different species, including commensalism.Rate this question:
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- 8.
Of these what are natural resources
- A.
Trees
- B.
Water
- C.
Laptops
- D.
Oil
- E.
Minerals
- F.
Lumber
- G.
Glass
Correct Answer(s)
A. Trees
B. Water
D. Oil
E. MineralsExplanation
The correct answer includes trees, water, oil, and minerals. These are considered natural resources because they are derived from the Earth and are essential for human survival and economic development. Trees provide us with oxygen, wood, and other products. Water is a vital resource for drinking, agriculture, and industrial use. Oil is a valuable energy source used in transportation and various industries. Minerals are used in construction, manufacturing, and technology. Therefore, these resources are crucial for sustaining life and supporting human activities.Rate this question:
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- 9.
Does Taking the Bus to work reduse your ecological footprint from if you were taking a bike
- A.
Yes
- B.
No
Correct Answer
B. NoExplanation
Taking the bus to work does not reduce your ecological footprint compared to taking a bike. While both modes of transportation are more environmentally friendly than driving a car, biking has a significantly lower ecological footprint than taking the bus. Biking does not produce any emissions or consume fuel, making it a zero-emission mode of transportation. On the other hand, buses still contribute to emissions and consume fuel, although they are more efficient than individual cars. Therefore, biking has a smaller ecological footprint compared to taking the bus.Rate this question:
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- 10.
______ the amount of garbage you produce. _____ products other then throwing them away. _______ if you cant reuse them
Correct Answer
Reduce
Reuse
RecycleExplanation
The correct answer is "Reduce, Reuse, Recycle". This sequence of actions is commonly recommended as a way to minimize waste and environmental impact. "Reduce" means to decrease the amount of garbage produced, for example by using less packaging or buying fewer disposable items. "Reuse" refers to finding alternative uses for products instead of throwing them away, such as repurposing containers or donating clothing. "Recycle" involves the process of converting waste materials into new products to reduce the need for raw materials.Rate this question:
- 11.
What does Biotic mean
- A.
When something has never been living
- B.
When something is living
- C.
When something was living but now its not
Correct Answer
B. When something is livingExplanation
The term "biotic" refers to something that is living. It describes organisms or factors that are derived from living organisms. Biotic factors include plants, animals, and microorganisms, as well as their interactions with each other and their environment. This term is often used in ecological studies to differentiate living components from non-living components in an ecosystem.Rate this question:
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- 12.
What does abiotic mean
- A.
When something has never been living
- B.
When something is living
- C.
When something was living but now its not
Correct Answer
A. When something has never been livingExplanation
Abiotic refers to something that has never been living. It describes non-living factors or components in an ecosystem, such as temperature, sunlight, soil, water, and minerals. These abiotic factors play a crucial role in shaping the environment and determining the types of organisms that can survive in a particular habitat.Rate this question:
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- 13.
What does dead mean
- A.
When something has never been living
- B.
When something is living
- C.
When something was living but now its not
Correct Answer
C. When something was living but now its notExplanation
The correct answer is "When something was living but now it's not." This definition of "dead" refers to something that was once alive but is no longer alive. It implies that there was a previous state of being alive, but that state has ceased to exist.Rate this question:
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- 14.
A Niche is a roll something plays in its daily life
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The given statement is true. A niche refers to the role or position that an organism or object occupies in its environment and the activities it carries out in its daily life. It describes how an organism interacts with its surroundings, including its habitat, food sources, and interactions with other species. Identifying and understanding an organism's niche is important in ecology as it helps in studying the relationships and dynamics within an ecosystem.Rate this question:
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- 15.
Producers Eat food made by Consumers
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement "Producers Eat food made by Consumers" is false. Producers, such as plants, make their own food through photosynthesis and do not rely on consuming food made by consumers. Consumers, on the other hand, obtain their food by eating other organisms, including producers.Rate this question:
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- 16.
Consumers provide food/energy and make life possible for all other orginisms on earth
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
This statement is false because while consumers do play a crucial role in providing food and energy to other organisms, they do not make life possible for all other organisms on earth. Producers, such as plants and algae, are the primary source of food and energy in most ecosystems through photosynthesis. Consumers rely on these producers for their survival, but they are not solely responsible for sustaining all life on earth.Rate this question:
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- 17.
_________ are organisms that feed or dead plant or animal matter
- A.
Decomposers
- B.
Eaters
- C.
Nothing
- D.
Scavengers
Correct Answer
D. ScavengersExplanation
Scavengers are organisms that feed on dead plant or animal matter. They play a crucial role in ecosystems by breaking down and recycling organic material, contributing to nutrient cycling. Scavengers help to clean up the environment by consuming carcasses and preventing the spread of disease. They are typically opportunistic feeders, consuming whatever food source is available to them. Some examples of scavengers include vultures, hyenas, and certain types of beetles.Rate this question:
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- 18.
_________ are organisms that grow on or in dead matter
- A.
Decomposers
- B.
Eaters
- C.
Nothing
- D.
Scavengers
Correct Answer
A. DecomposersExplanation
Decomposers are organisms that break down and consume dead matter, such as dead plants and animals. They play a crucial role in the ecosystem by recycling nutrients back into the environment, allowing them to be reused by other organisms. Through the process of decomposition, decomposers help to break down complex organic compounds into simpler forms, ultimately contributing to the overall balance and health of the ecosystem.Rate this question:
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- 19.
Is this the water cycle? Precipitation to runoff/ground water to evapotation to condensation then back to precipitation
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The given answer is true. The water cycle refers to the continuous movement of water on, above, and below the Earth's surface. It involves various processes such as evaporation, condensation, precipitation, and runoff. Precipitation occurs when water vapor in the atmosphere condenses into liquid or solid form and falls to the Earth's surface. This water can then either run off into rivers and streams or seep into the ground, becoming groundwater. Eventually, some of the water evaporates back into the atmosphere, continuing the cycle.Rate this question:
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- 20.
This is an example of _______________ there is waste in the ocean then baby fish eat it then small fish eat the baby fish then large fish eat the small fish then us humans eat the big fish
Correct Answer
BioaccumulationExplanation
The given answer, bioaccumulation, refers to the process by which toxins or pollutants accumulate in the tissues of organisms as they move up the food chain. In this scenario, waste in the ocean contains toxins that are ingested by baby fish. As these baby fish are eaten by small fish, the toxins accumulate in their tissues. This process continues as small fish are consumed by larger fish, further increasing the concentration of toxins. Finally, when humans consume the big fish, they may be exposed to high levels of these accumulated toxins.Rate this question:
- 21.
When nothing has ever grown in a place and something new grows it is called
- A.
Primary succession
- B.
Secondary Succession
- C.
New growth
- D.
Regrowth
Correct Answer
A. Primary successionExplanation
Primary succession refers to the process of ecological succession that occurs in an area where no life has existed before. In this case, when something new grows in a place where nothing has ever grown, it indicates the beginning of a new ecosystem development from bare rock or soil. This process involves the colonization of pioneer species, which gradually create conditions for more complex organisms to thrive. Therefore, the term "Primary succession" accurately describes the situation described in the question.Rate this question:
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- 22.
Something has grown in a place before and dies and something new grows it is called
- A.
Primary succession
- B.
Secondary Succession
- C.
New growth
- D.
Regrowth
Correct Answer
B. Secondary SuccessionExplanation
Secondary succession refers to the process of ecological succession that occurs in an area where an ecosystem has been disturbed or destroyed, but the soil remains intact. In this process, new plant and animal species gradually colonize the area, replacing the previous ones that were lost. This can happen after events like forest fires, hurricanes, or human activities. Unlike primary succession, which starts on bare rock or soil, secondary succession begins with remnants of the previous community, allowing for a faster and more efficient regeneration of the ecosystem.Rate this question:
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- 23.
How are plants part of the enviroment
- A.
For oxygen
- B.
Basis of food webs
- C.
For Food
- D.
For Shelter
- E.
For filter water
- F.
For Fibre
- G.
For Medicine
- H.
For Transportation
- I.
For Feul
Correct Answer(s)
A. For oxygen
B. Basis of food webs
D. For Shelter
E. For filter waterExplanation
Plants are an essential part of the environment because they provide oxygen through the process of photosynthesis. They are also the basis of food webs as they are primary producers, converting sunlight into energy that is then consumed by herbivores, which are then consumed by carnivores. Plants also provide shelter for various organisms, serving as habitats and hiding places. Additionally, plants play a role in filtering water by absorbing pollutants and excess nutrients. They are a source of fiber, which is important for digestion, and they have medicinal properties that can be used for healing. Plants have been historically used for transportation, such as horses pulling carriages, and they can also be used as fuel in the form of wood or biofuels.Rate this question:
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- 24.
Human uses of plants
- A.
For oxygen
- B.
Basis of food webs
- C.
For Food
- D.
For Shelter
- E.
For filter water
- F.
For Fibre
- G.
For Medicine
- H.
For Transportation
- I.
For Feul
Correct Answer(s)
C. For Food
F. For Fibre
G. For Medicine
H. For Transportation
I. For FeulExplanation
Plants are essential for human survival and well-being. They provide us with food, fiber, medicine, transportation, and fuel. Food is a basic necessity, and plants are a major source of nutrients and sustenance for humans. Fiber obtained from plants is used in various industries, such as textile and paper production. Many medicinal drugs are derived from plants, and they play a crucial role in maintaining human health. Plants also serve as a means of transportation, as they are used for landscaping, gardening, and even as fuel for vehicles. Overall, plants have multiple uses that are vital for human existence.Rate this question:
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- 25.
Diffusion is when particles are distributed by moving and spreding around the thing
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Diffusion is the process by which particles move and spread out from an area of higher concentration to an area of lower concentration. This movement occurs due to the random motion of particles. Therefore, the given statement is correct, as it accurately describes the concept of diffusion.Rate this question:
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- 26.
What are some functions of stems
- A.
To annoy people
- B.
For support
- C.
For food storage
- D.
No functions of a stem
Correct Answer(s)
B. For support
C. For food storageExplanation
The functions of stems include providing support to the plant and storing food. Stems are responsible for holding the plant upright and providing structural support. They also have the ability to store food reserves, which can be used by the plant during times of need, such as during periods of drought or when the plant is flowering or fruiting. Therefore, the correct answer is "For support, For food storage".Rate this question:
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- 27.
An Embryo is when a plant is fully formed
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
its false an Embryo is when the seed is in the ground but it hasn't germinated but something in the ground is growingRate this question:
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- 28.
What is Erosion
- A.
When a plant works perfectly
- B.
Soil that is blown away by wind or water
- C.
Soil that is destroyed
Correct Answer
B. Soil that is blown away by wind or waterExplanation
Erosion refers to the process of soil being carried away by wind or water. This can occur when the natural protective cover of vegetation is disrupted, leaving the soil exposed to the elements. The force of wind or water can then displace and transport the soil particles, causing erosion. This phenomenon can have detrimental effects on the environment, as it leads to the loss of fertile topsoil and can contribute to land degradation and sedimentation in water bodies.Rate this question:
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- 29.
In Photosynthesis a plant takes in ________ , ________ and ________ the plant will give off ________ and ________.
Correct Answer
Carbon Dioxide
Water
Sunlight
Oxygen
Glucose, SugarExplanation
In photosynthesis, plants take in carbon dioxide, water, and sunlight to produce oxygen and glucose. Carbon dioxide is absorbed from the atmosphere through tiny openings called stomata in the leaves. Water is taken up by the roots and transported to the leaves through the xylem vessels. Sunlight is absorbed by chlorophyll in the chloroplasts of the plant cells, which initiates the process of photosynthesis. During photosynthesis, oxygen is released as a byproduct and glucose is synthesized and stored as a source of energy for the plant.Rate this question:
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