Living Organisms & Their Environment

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  • 1/25 Questions

    The scientific name for a human is

    • Man
    • Canis lupus
    • Homo canis
    • Cannabis sativia
    • Homo sapien
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About This Quiz

This quiz will test the knowledge of students about the topic. It will cover everything done during taught sessions. Please note that some questions have MORE THAN ONE answer.

Living Organisms & Their Environment - Quiz

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  • 2. 

    Using the binomial system, an organism is named using its

    • Kingdom

    • Phylum & class

    • Genus & species

    • Parasitic associate

    • Mode of reproduction

    Correct Answer
    A. Genus & species
    Explanation
    The correct answer is "genus & species" because the binomial system of nomenclature, developed by Carl Linnaeus, assigns every organism a unique two-part scientific name consisting of its genus (a group of closely related species) and its species (a specific type within the genus). This system allows for precise identification and classification of organisms based on their evolutionary relationships and shared characteristics. The genus and species names together form the scientific name of an organism, which is universally recognized and used by scientists worldwide.

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  • 3. 

    In a food chain/ web plants are called

    • Primary producers

    • Secondary producers

    • Tertiary consumers

    • Secondary consumers

    • None of the above

    Correct Answer
    A. Primary producers
    Explanation
    Plants are called primary producers in a food chain/web because they are capable of photosynthesis, which allows them to convert sunlight, water, and carbon dioxide into energy-rich organic compounds. This energy is then transferred to other organisms in the food chain/web. As primary producers, plants play a crucial role in providing energy and nutrients to the rest of the ecosystem.

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  • 4. 

    What human activity has added the most carbon to the atmosphere

    • Mining fossil fuels

    • Burning fossil fuels

    • Cutting down rain forests

    • Increasing soil erosion

    • None of the above

    Correct Answer
    A. Burning fossil fuels
    Explanation
    Burning fossil fuels is the human activity that has added the most carbon to the atmosphere. When fossil fuels such as coal, oil, and natural gas are burned for energy, carbon dioxide is released into the atmosphere. This process is a major contributor to the increase in greenhouse gases and the subsequent warming of the planet. Other activities like mining fossil fuels, cutting down rain forests, and increasing soil erosion can also have negative environmental impacts, but they do not directly release as much carbon into the atmosphere as burning fossil fuels does.

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  • 5. 

    Choose the correct order for a classification system

    • Kingdom, Phylum, Class, Order, Family, Genus, Species

    • Kingdom, Class, Phylum, Genus, Order, Species

    • Phylum, Kingdom, Class, Family, Order, Species, Genus

    • Phylum, Class, Order, Kingdom, Genus, Species

    • Species, Genus,Family, Order, Class, Phylum, Kingdom

    Correct Answer
    A. Kingdom, Phylum, Class, Order, Family, Genus, Species
    Explanation
    The correct order for a classification system is Kingdom, Phylum, Class, Order, Family, Genus, Species. This order follows the hierarchical structure of taxonomy, starting from the broadest category (Kingdom) and gradually narrowing down to the most specific category (Species). Each level represents a different level of similarity and relatedness among organisms.

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  • 6. 

    Which of the following is NOT a vertebrate

    • Fish

    • Cat

    • Turkey

    • Lobster

    • Bear

    Correct Answer
    A. Lobster
    Explanation
    A lobster is not a vertebrate because it belongs to the phylum Arthropoda, which includes animals with an exoskeleton and jointed appendages. Vertebrates, on the other hand, belong to the phylum Chordata and have a backbone or spinal column. Fish, cat, turkey, and bear are all vertebrates as they possess a backbone, while the lobster does not.

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  • 7. 

    Which of the following are found in the Kingdom Animalia?

    • Tapeworm

    • Bird

    • Lichen

    • Snake

    • B and D

    Correct Answer
    A. B and D
    Explanation
    The correct answer is B and D because both birds and snakes are classified as animals in the Kingdom Animalia. Tapeworms are also animals, but lichens are not.

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  • 8. 

    The most accurate way of determining energy loss in a food web is by using a

    • Calculator

    • Pyramid of biomass

    • Pyramid of energy

    • Guessing

    • Pyramid of numbers

    Correct Answer
    A. Pyramid of energy
    Explanation
    The pyramid of energy is the most accurate way of determining energy loss in a food web. This is because it represents the flow of energy through different trophic levels, with each level representing the amount of energy available. As energy is transferred from one level to another, there is always a loss of energy due to metabolic processes and heat production. The pyramid of energy provides a visual representation of this energy loss, with each level becoming smaller as you move up the pyramid. This makes it a reliable tool for understanding the energy dynamics within a food web.

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  • 9. 

    Which type of relationship is considered beneficial for both organisms?

    • Predator- prey

    • Mutualism

    • Commensalism

    • Parasitism

    • Consumer- producer

    Correct Answer
    A. Mutualism
    Explanation
    Mutualism is considered beneficial for both organisms because it involves a symbiotic relationship where both organisms benefit from each other. In mutualism, both organisms provide resources or services to each other, resulting in a mutually advantageous situation. This type of relationship promotes cooperation and the exchange of resources, leading to increased survival and reproductive success for both organisms involved.

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  • 10. 

    Which of the following act as decomposers in an ecosystem?

    • Bacteria

    • Viruses

    • Parasites

    • Fungi

    • A and D

    Correct Answer
    A. A and D
    Explanation
    Bacteria and fungi both act as decomposers in an ecosystem. Bacteria break down organic matter and release nutrients back into the environment, while fungi decompose dead organisms and organic material. Both of these organisms play a crucial role in recycling nutrients and breaking down dead matter, thus contributing to the overall health and balance of the ecosystem. Viruses and parasites, on the other hand, do not typically act as decomposers.

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  • 11. 

    What percentage of carbon dioxide is found in the atmosphere?

    • 0.03%

    • 3%

    • 40%

    • 13%

    • 28%

    Correct Answer
    A. 0.03%
    Explanation
    The correct answer is 0.03%. This is because carbon dioxide makes up only a small fraction of the Earth's atmosphere. While it is an important greenhouse gas, it is present in trace amounts, accounting for approximately 0.03% of the atmosphere.

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  • 12. 

    Which of the following is false about the advantages of classifying organisms?

    • It is easier to identify a specific organism

    • All organisms in a group will have similar features which can be described

    • Classification groups are universal

    • Classifying organisms in the future is made easier

    • Only scientist can understand how organisms are classified

    Correct Answer
    A. Only scientist can understand how organisms are classified
    Explanation
    The statement "only scientists can understand how organisms are classified" is false. While scientists may have a deeper understanding of the classification system and its intricacies, classification is not limited to scientists alone. Classification systems are designed to be accessible and understandable to a wide range of people, including students, researchers, and the general public. The goal of classification is to organize and categorize organisms in a way that is logical and comprehensible to all individuals interested in studying and learning about the natural world.

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  • 13. 

    ____ fixes carbon into green plants

    • Denitrification

    • Photosynthesis

    • Carbonation

    • Hydrolysis

    • Bacteria

    Correct Answer
    A. Photosynthesis
    Explanation
    Photosynthesis is the process by which green plants convert carbon dioxide and water into glucose and oxygen, using sunlight as the source of energy. During this process, carbon is fixed into the plants, meaning it is taken from the atmosphere and incorporated into organic molecules. Therefore, photosynthesis is the correct answer as it accurately describes the process of carbon fixation in green plants.

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  • 14. 

    Who developed the classification system that is used today?

    • Charles Darwin

    • Louis Pasteur

    • Edward Jenner

    • Carl Linnaeus

    • Robert Hooke

    Correct Answer
    A. Carl Linnaeus
    Explanation
    Carl Linnaeus developed the classification system that is used today. He is known as the father of modern taxonomy and his system, known as Linnaean taxonomy, is still the basis for organizing and categorizing living organisms. Linnaeus introduced the hierarchical system of classifying organisms into kingdoms, phyla, classes, orders, families, genera, and species. His system also included the use of binomial nomenclature, where each species is given a unique two-part scientific name. Linnaeus's contributions revolutionized the field of biology and his classification system is still widely used by scientists around the world.

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  • 15. 

    Carbon is NOT essential in which compound?

    • Protein

    • Carbohydrate

    • Water

    • Fat

    • Glucose

    Correct Answer
    A. Water
    Explanation
    Water is the only compound listed that does not contain carbon. Carbon is an essential element in proteins, carbohydrates, fats, and glucose, as they all contain carbon atoms in their chemical structure. However, water is composed of two hydrogen atoms and one oxygen atom, and it does not contain any carbon.

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  • 16. 

    Why is it difficult to integrate nitrogen gas from the atmosphere into the nitrogen cycle?

    • Nitrogen is not very abundant int he atmosphere

    • Few organisms can directly utilize atmospheric nitrogen gas

    • Most plants do not require organic nitrogen compounds for survival

    • Oceans quickly absorb nitrogen gas

    • Living organisms quickly absorb nitrogen gas

    Correct Answer
    A. Few organisms can directly utilize atmospheric nitrogen gas
    Explanation
    Nitrogen gas (N2) is the most abundant form of nitrogen in the atmosphere, but it is not readily usable by most organisms. Only a few specialized organisms, such as certain bacteria, have the ability to directly convert atmospheric nitrogen gas into a usable form through a process called nitrogen fixation. This limitation makes it difficult for nitrogen gas to be integrated into the nitrogen cycle, as it requires specific organisms to convert it into forms that can be utilized by other organisms in the cycle.

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  • 17. 

    The conversion of nitrogen to a more suitable form in the nitrogen cycle is called

    • Nitrification

    • Nitrogen fixation

    • Denitrification

    • Detoxification

    • None of the above

    Correct Answer
    A. Nitrogen fixation
    Explanation
    Nitrogen fixation is the process in the nitrogen cycle where atmospheric nitrogen is converted into a more usable form for plants and other organisms. This process is carried out by nitrogen-fixing bacteria, which convert nitrogen gas into ammonia or nitrate. Nitrification, on the other hand, is the process where ammonia is converted into nitrite and then into nitrate. Denitrification is the process where nitrate is converted back into nitrogen gas. Detoxification is not a term used in the nitrogen cycle. Therefore, the correct answer is nitrogen fixation.

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  • 18. 

    The science of naming & classifying organisms is called

    • Taxonomy

    • Binomial nomenclature

    • Systematics

    • Mutualism

    • A and C

    Correct Answer
    A. Taxonomy
    Explanation
    Taxonomy is the correct answer because it refers to the scientific discipline of naming and classifying organisms based on their characteristics and evolutionary relationships. Binomial nomenclature, on the other hand, is a specific naming system within taxonomy that assigns each species a unique two-part scientific name. Systematics is another term used in taxonomy, which focuses on the evolutionary relationships and classification of organisms. Mutualism, however, is not related to the science of naming and classifying organisms.

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  • 19. 

    The Fungi kingdom is classified as

    • Eukaryotic, multicellular

    • Eukaryotic, unicellular

    • Prokaryotic, unicellular

    • Prokaryotic, multicellular

    • None of the above

    Correct Answer
    A. Eukaryotic, multicellular
    Explanation
    The Fungi kingdom is classified as eukaryotic, multicellular because fungi are made up of eukaryotic cells, which means they have a nucleus and other membrane-bound organelles. Additionally, most fungi are multicellular organisms, meaning they are composed of many cells that work together to form a larger organism.

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  • 20. 

    The level at which an organism feeds in a food web is known as a

    • Pyramid of energy

    • Food chain

    • Trophic level

    • Pyramid step

    • None of the above

    Correct Answer
    A. Trophic level
    Explanation
    The level at which an organism feeds in a food web is known as a trophic level. Trophic levels represent the different positions in a food chain or web, indicating the transfer of energy and nutrients from one organism to another. Each trophic level represents a different feeding level, with primary producers at the base, followed by primary consumers, secondary consumers, and so on. The concept of trophic levels helps to understand the flow of energy and the interactions between different organisms in an ecosystem.

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  • 21. 
    In the diagram above identify ALL the secondary consumers - ProProfs

    In the diagram above identify ALL the secondary consumers

    • Hawk

    • Deer

    • Snake

    • Frog

    • Trees

    Correct Answer(s)
    A. Hawk
    A. Snake
    A. Frog
    Explanation
    The secondary consumers in the given diagram are the hawk, snake, and frog. Secondary consumers are organisms that feed on primary consumers, which in turn feed on producers. In this case, the hawk preys on smaller animals such as snakes and frogs, making it a secondary consumer. Similarly, the snake and frog feed on smaller organisms, making them secondary consumers as well. The deer and trees mentioned in the options are not secondary consumers as they do not directly feed on other animals.

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  • 22. 

    The organisms which feed on faeces & waste material in an ecosystem are called

    • Decomposers

    • Denitrifying bacteria

    • Detritivores

    • Nitrogen fixing bacteria

    • Garbage collectors

    Correct Answer
    A. Detritivores
    Explanation
    Detritivores are organisms that feed on dead organic matter, including faeces and waste material, in an ecosystem. They play a crucial role in breaking down and recycling nutrients, returning them to the environment. Unlike decomposers, which primarily break down organic matter into simpler compounds, detritivores physically consume the dead material. Denitrifying bacteria and nitrogen-fixing bacteria are involved in the nitrogen cycle, while garbage collectors is a term not commonly used in ecology. Therefore, the correct answer is detritivores.

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  • 23. 
    This pyramid is an example of what - ProProfs

    This pyramid is an example of what

    • Pyramid of biomass

    • Classification table

    • Pyramid of energy

    • Pyramid of numbers

    • A and D

    Correct Answer
    A. Pyramid of numbers
    Explanation
    This pyramid is an example of a pyramid of numbers. The pyramid of numbers represents the number of organisms at each trophic level in an ecosystem. In this type of pyramid, the number of individuals decreases as you move up the food chain, with the highest number of organisms at the base and the lowest number at the top. This pyramid helps to visualize the energy flow and the relationship between different organisms in an ecosystem.

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  • 24. 

    Humans are an example of

    • Predator

    • Omnivore

    • Herbivore

    • Prey

    • Carnivore

    Correct Answer(s)
    A. Predator
    A. Omnivore
    Explanation
    Humans can be considered as an example of both a predator and an omnivore. As predators, humans have the ability to hunt and consume other animals for food. Additionally, as omnivores, humans have a diverse diet that includes both plant and animal sources. This combination of characteristics makes humans capable of consuming a wide variety of food items, making them both predators and omnivores.

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  • 25. 

    Which of the following DO NOT release carbon into the atmosphere?

    • Respiration

    • Combustion

    • Photosynthesis

    • Fossilisation

    • Death

    Correct Answer(s)
    A. Photosynthesis
    A. Fossilisation
    Explanation
    Photosynthesis is the process by which plants convert carbon dioxide into oxygen, therefore it does not release carbon into the atmosphere. Fossilisation is the process by which organic material is preserved in the earth's crust, and it does not release carbon into the atmosphere either.

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  • Current Version
  • Apr 11, 2025
    Quiz Edited by
    ProProfs Editorial Team
  • Jan 31, 2010
    Quiz Created by
    Asha26
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