Year 7 Revision Ecosystem & Classification
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- 1.
What is the definition of an organism?
- A.
An individual living thing
- B.
A group of living things
- C.
Another term for a species
- D.
Another term for an ecosystem
Correct Answer
A. An individual living thingExplanation
An organism is defined as an individual living thing. It refers to a single, complete living entity that can carry out all the essential functions of life, such as growth, reproduction, and response to stimuli. Organisms can be as simple as a single-celled organism or as complex as a multi-cellular organism. This definition distinguishes organisms from groups of living things, which are not considered individual entities, and from other terms like species or ecosystem, which have different meanings in the context of biology.Rate this question:
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- 2.
What is the definition of an invertebrate?
- A.
An organism that has legs with joints
- B.
An organism that has a backbone
- C.
An organism that has a no backbone
- D.
An organism that has lungs when fully grown
Correct Answer
C. An organism that has a no backboneExplanation
The correct answer is "An organism that has no backbone." Invertebrates are animals that lack a vertebral column, or backbone. This means that they do not have a spinal column made up of individual vertebrae. Examples of invertebrates include insects, worms, mollusks, and crustaceans. They have a wide range of body structures and adaptations, but the defining characteristic is the absence of a backbone.Rate this question:
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- 3.
What is the definition of a vertebrate?
- A.
An organism that has a backbone
- B.
An organism that has no backbone
- C.
An organism that has legs with joints
- D.
An organism that has gills when fully grown
Correct Answer
A. An organism that has a backboneExplanation
A vertebrate is defined as an organism that has a backbone. The backbone, also known as the vertebral column, is a series of bones that run along the dorsal side of the body and provides support and protection for the spinal cord. Vertebrates include mammals, birds, reptiles, amphibians, and fish. This characteristic sets them apart from invertebrates, which do not have a backbone.Rate this question:
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- 4.
What is the definition of a cell?
- A.
A tiny creature
- B.
The building block of all living things
- C.
A macroinvertebrate
- D.
A whole individual living things
Correct Answer
B. The building block of all living thingsExplanation
The definition of a cell is the building block of all living things. Cells are the basic structural and functional units of life. They are responsible for carrying out all the necessary processes for an organism to survive and reproduce. Cells can vary in size, shape, and function, but they all share the common characteristic of being the fundamental units of life.Rate this question:
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- 5.
What is the definition of biotic?
- A.
Animals that breakdown other dead material
- B.
Dead things
- C.
Non-living components of an ecosystem
- D.
Living components of an ecosystem
Correct Answer
D. Living components of an ecosystemExplanation
The definition of biotic refers to the living components of an ecosystem. This includes all living organisms such as plants, animals, fungi, and microorganisms that interact with each other and with the non-living components of the environment. Biotic factors play a crucial role in shaping and maintaining the balance of an ecosystem, as they are involved in processes such as energy flow, nutrient cycling, and ecological interactions.Rate this question:
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- 6.
What is the definition of abiotic?
- A.
Animals that breakdown dead material
- B.
An individual living thing
- C.
Non-living components of an ecosystem
- D.
Living components of an ecosystem
Correct Answer
C. Non-living components of an ecosystemExplanation
Abiotic refers to the non-living components of an ecosystem. This includes physical factors such as temperature, sunlight, soil, water, and air. These abiotic factors play a crucial role in shaping the environment and determining the types of organisms that can survive in a particular ecosystem. Unlike biotic factors, which are living organisms, abiotic factors do not possess life functions or biological processes. Understanding the abiotic components of an ecosystem is essential for studying and managing ecological systems.Rate this question:
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- 7.
What is the definition of an ecosystem?
- A.
The interaction of living and non-living components within a particular place
- B.
The interaction of living and dead organisms within a particular place
- C.
The breakdown of dead material
- D.
The recycling of carbon through the atmosphere, hydrosphere and lithosphere
Correct Answer
A. The interaction of living and non-living components within a particular placeExplanation
An ecosystem is defined as the interaction of living and non-living components within a particular place. This means that within an ecosystem, organisms (living components) interact with their physical environment (non-living components) in a complex web of relationships. These interactions include the exchange of energy, nutrients, and resources, as well as the influence of abiotic factors such as temperature, water availability, and soil composition on the organisms. The concept of an ecosystem emphasizes the interconnectedness and interdependence of all living and non-living elements within a specific area.Rate this question:
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- 8.
What is the definition of a community?
- A.
The interaction of biotic components and their food
- B.
A group of different species interacting and occupying a particular place
- C.
A group of the same species occupying the same place
- D.
The natural environment in which an organism lives
Correct Answer
B. A group of different species interacting and occupying a particular placeExplanation
The definition of a community is a group of different species interacting and occupying a particular place. This means that within a community, there are multiple species that live together in the same location and interact with each other. This interaction can include various relationships such as predator-prey, competition for resources, and mutualism. The concept of a community highlights the interconnectedness and interdependence of different species within an ecosystem.Rate this question:
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- 9.
What is the definition of a species?
- A.
A group of individuals who are able to mate
- B.
A group of individuals who belong to the same phylum
- C.
A group of individuals who have similar characteristics
- D.
A group of individuals who have similar characteristics and can produce fertile offspring
Correct Answer
D. A group of individuals who have similar characteristics and can produce fertile offspringExplanation
A species is defined as a group of individuals who have similar characteristics and can produce fertile offspring. This definition emphasizes the importance of both physical similarities and reproductive compatibility in determining species membership. It acknowledges that individuals within a species share common traits and are capable of successfully reproducing to produce viable offspring. This definition helps to differentiate one species from another and is widely accepted in the field of biology.Rate this question:
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- 10.
Which of the following is a characteristic of all living things?
- A.
Having lungs
- B.
Photosynthesis
- C.
Respiration
- D.
Being a part of the Kingdom Animals
Correct Answer
C. RespirationExplanation
Respiration is a characteristic of all living things because it is the process by which organisms obtain energy from food and release waste products. It involves the exchange of gases, such as oxygen and carbon dioxide, between an organism and its environment. All living organisms, from single-celled bacteria to complex multicellular organisms, require respiration to carry out their metabolic processes and maintain homeostasis. Having lungs, photosynthesis, and being a part of the Kingdom Animals are not characteristics that apply to all living things.Rate this question:
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- 11.
Which of the following is NOT a characteristic of all living things?
- A.
Doesn't need oxygen
- B.
Able to reproduce
- C.
Movement
- D.
Sensitivity
Correct Answer
A. Doesn't need oxygenExplanation
Oxygen is essential for most living organisms to carry out cellular respiration, which is the process that provides energy for their survival. However, there are some organisms, such as anaerobic bacteria, that can survive without oxygen. Therefore, not needing oxygen is not a characteristic that applies to all living things.Rate this question:
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- 12.
What is the difference between non-living and dead?
- A.
Non-living are things that are only man-made, dead things were once alive
- B.
Non-living means it was once alive, dead means it was never alive
- C.
Non-living means it was never alive, dead means it was once alive
- D.
Non-living things are man-made, dead things only exist in nature
Correct Answer
C. Non-living means it was never alive, dead means it was once aliveExplanation
The correct answer explains the difference between non-living and dead by stating that non-living means something was never alive, while dead means it was once alive. This answer accurately distinguishes between the two terms, highlighting that non-living refers to things that have never possessed life, whereas dead refers to something that was once alive but is no longer alive.Rate this question:
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- 13.
What is a dichotomous key?
- A.
A key that helps you identify organisms
- B.
A key that give you the scientific name for anything non-living
- C.
A key only used for plants
- D.
A key that's only used to classify animals
Correct Answer
A. A key that helps you identify organismsExplanation
A dichotomous key is a tool used in biology to help identify organisms. It consists of a series of paired statements or questions that lead the user to the correct identification of a particular organism. By answering each question or statement, the user is able to narrow down the possibilities and eventually determine the organism's identity. This key can be used for both plants and animals, making it a versatile tool in the field of taxonomy.Rate this question:
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- 14.
What is the difference between unicellular and multicellular?
- A.
Unicellular means an organism made up of only one cell
- B.
Multicellular means an organism made up of more than one cell
- C.
Unicellular organisms are smaller than multicellular organisms
- D.
All of the above
Correct Answer
D. All of the aboveExplanation
The correct answer is "All of the above." This means that all of the statements mentioned in the question are true. Unicellular organisms are indeed made up of only one cell, while multicellular organisms are made up of more than one cell. Additionally, unicellular organisms are generally smaller in size compared to multicellular organisms.Rate this question:
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- 15.
What is photosynthesis?
- A.
The process that all plants undergo to create energy
- B.
A chemical equation that produces carbon dioxide
- C.
What all livings things do to live
- D.
The green pigment in plants
Correct Answer
A. The process that all plants undergo to create energyExplanation
Photosynthesis is the process by which plants convert sunlight, carbon dioxide, and water into glucose (a type of sugar) and oxygen. This process occurs in the chloroplasts of plant cells and is facilitated by the green pigment called chlorophyll. Through photosynthesis, plants are able to produce their own food and release oxygen into the atmosphere. This energy-rich glucose is then used by plants for growth, reproduction, and other metabolic processes.Rate this question:
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- 16.
What is respiration?
- A.
Another word for the heart beating
- B.
A chemical reaction where the products are glucose and energy
- C.
When plants produce their own energy
- D.
The use of energy and oxygen and removal of carbon dioxide
Correct Answer
D. The use of energy and oxygen and removal of carbon dioxideExplanation
Respiration refers to the process in which organisms use energy and oxygen while getting rid of carbon dioxide. It involves the exchange of gases between an organism and its environment, allowing for the release of energy from glucose. This process is essential for the survival of living organisms, including plants and animals.Rate this question:
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- 17.
What is the chemical formula for photosynthesis?
- A.
Option 1
![Year 7 Revision Ecosystem & Classification - Quiz]()
- B.
Option 2
- C.
![Year 7 Revision Ecosystem & Classification - Quiz]()
- D.
None of the above
Correct Answer
B. Option 2Explanation
The chemical formula for photosynthesis is not provided in the options given. Therefore, the correct answer is "None of the above."Rate this question:
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- 18.
What is the formula for respiration?
- A.
Option 1
![Year 7 Revision Ecosystem & Classification - Quiz]()
- B.
Option 2
- C.
Option 3
![Year 7 Revision Ecosystem & Classification - Quiz]()
- D.
None of the above
Correct Answer
A. Option 1Explanation
The formula for respiration is not provided in the question, so "None of the above" cannot be the correct answer. Therefore, the correct answer must be one of the given options, which is Option 1. However, without the actual formula being provided, it is not possible to provide a specific explanation for Option 1.Rate this question:
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- 19.
Which order is correct for the order of taxonomy?
- A.
Kingdom Phylum Class Order Family Genus Species
- B.
Kingdom Animals Mammals Fish Bacteria
- C.
Kingdom Class Genus Species Family Order Phylum
- D.
Species Genus Family Order Class Phylum Kingdom
Correct Answer
A. Kingdom Phylum Class Order Family Genus SpeciesExplanation
The correct order of taxonomy is Kingdom, Phylum, Class, Order, Family, Genus, Species. This order is based on the hierarchical classification system used in biology to categorize and organize living organisms. Starting with the broadest category, Kingdom, and moving down to the most specific category, Species, this order allows for the classification of organisms based on their shared characteristics and evolutionary relationships.Rate this question:
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- 20.
Which organisms would have MOST in common?
- A.
Tow organisms in the sale phylum
- B.
Two organisms in the same genus
- C.
Two organisms in the same kingdom
- D.
Two organisms in the same order
Correct Answer
B. Two organisms in the same genusExplanation
Two organisms in the same genus would have the most in common because the genus is a more specific classification than the phylum, kingdom, or order. Organisms in the same genus share more similarities in terms of their physical characteristics, genetic makeup, and evolutionary history. They are more closely related and likely share a more recent common ancestor. Therefore, two organisms in the same genus would have the most similarities compared to organisms in the same phylum, kingdom, or order.Rate this question:
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- 21.
Who is Carl Linnaeus?
- A.
A scientist that created the 'binomial nomenclature'
- B.
A scientist that was from Sweden
- C.
A scientist that is famous for his work in taxonomy
- D.
All of the above
Correct Answer
D. All of the aboveExplanation
Carl Linnaeus was a scientist from Sweden who is famous for his work in taxonomy. He is best known for creating the 'binomial nomenclature' system, which is the scientific naming system used to classify and categorize organisms. Therefore, all of the given options are correct statements about Carl Linnaeus.Rate this question:
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- 22.
What does binomial nomenclature mean?
- A.
Two-naming system
- B.
Singular name
- C.
Genus Species
- D.
An organism's scientific name
Correct Answer
A. Two-naming systemExplanation
Binomial nomenclature refers to a two-naming system used in taxonomy to give each organism a unique scientific name. This system consists of two parts: the genus and the species name. The genus represents a group of closely related organisms, while the species name identifies a particular species within that genus. Together, these two names provide a standardized way of identifying and classifying different organisms, allowing scientists from around the world to communicate and understand each other's research.Rate this question:
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- 23.
What is the species name of modern humans?
- A.
Homo Erectus
- B.
Homo Sapiens Neanderthal
- C.
Homo Sapiens Sapiens
- D.
Homo Habilis
Correct Answer
C. Homo Sapiens SapiensExplanation
The species name of modern humans is Homo Sapiens Sapiens. This is the correct answer because Homo Sapiens Sapiens is the scientific name given to the subspecies of humans that exist today. It distinguishes modern humans from other extinct species of the Homo genus, such as Homo Erectus, Homo Sapiens Neanderthal, and Homo Habilis.Rate this question:
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- 24.
What is the genus of modern humans?
- A.
Homo
- B.
Neanderthal
- C.
Sapiens
- D.
Homo
Correct Answer
D. HomoExplanation
The correct answer is Homo because Homo is the genus of modern humans. The other options, Neanderthal and Sapiens, are not the correct genus for modern humans.Rate this question:
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- 25.
What are the 4 of the 7 characteristics of a living thing?
- A.
Reproduction, Species, Biotic, Excretion
- B.
Movement, Respiration, Nutrition, Eating
- C.
Respiration, Reproduction, Sensitivity, Movement
- D.
Excretion, Respiration, Photosynthesis, Movement
Correct Answer
C. Respiration, Reproduction, Sensitivity, MovementExplanation
The four characteristics of a living thing are respiration, reproduction, sensitivity, and movement. Respiration refers to the process of obtaining and using energy. Reproduction is the ability to produce offspring. Sensitivity refers to the ability to respond to stimuli in the environment. Movement is the ability to change position or location. These characteristics are essential for an organism to be considered alive as they are fundamental to its survival and ability to interact with its surroundings.Rate this question:
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Mar 22, 2023Quiz Edited by
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Jun 07, 2018Quiz Created by
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