Organism and its Environment MCQs and Answers

Are you looking for Organism and its Environment MCQs and Answers for medical entrance examinations? If yes, these are some most important multiple choice questions and answers on NCERT Class-12 Biology, Chapter-13 (Organisms and Populations).

Here we composed these organism and its Environment MCQs and Answers after reading the chapter on Organisms and Populations from the NCERT book on Class 12 Biology. The questions are topics-wise and the students can relate the questions easily to the most important topics of this chapter.

Organism and its Environment MCQs and Answers

1. Who is revered as Father of Ecology in India?

a) Ramdeo Misra

b) Raja Ram Mohan Roy

c) Verghese Kurien

d) MS Swaminathan

Answer: a


2. By studying what processes can we tell the complexity of organisms?

a) Physical organization

b) Biological organization

c) Chemical organization

d) Physiological organization

Answer: b


3. What is the first level of organization?

a) Organ

b) Cell

c) Organism

d) Macromolecules

Answer: d


4. What is the level of the organization after the macromolecules?

a) Polymer

b) Tissue

c) Cell

d) Organ

Answer: c


5. What is the level of the organization after the cell?

a) Macromolecules

b) Organ

c) Tissue

d) Organism

Answer: c


6. What is the level of the organization before an organism?

a) Tissue

b) Organ

c) Cell

d) Community

Answer: b


7. What is the level of the organization after the organs?

a) Community

b) Cell

c) Tissues

d) Organism

Answer: d


8. What is the level of the organization after an individual organism?

a) Community

b) Organs

c) Population

d) Cells

Answer: c


9. What is the level of the organization after the population?

a) Community

b) Organism

c) Tissues

d) Organs

Answer: a


10. What is the organizational level before biomes?

a) Ecosystem

b) Population

c) Communities

d) Organism

Answer: a


11. Which of the following is the last level of organization?

a) Cells

b) Organism

c) Biomes

d) Ecosystem

Answer: c


12. By which method do birds communicate with each other?

a) Shouting

b) Eating

c) Talking

d) Singing

Answer: d


13. How many levels of the organization do ecology consists of?

a) Two

b) Eight

c) Five

d) Four

Answer: d


14. What is a group of individuals belonging to the same species within an ecosystem called?

a) Species

b) Population

c) Biomes

d) Manipulation

Answer: b


15. For what is the interaction among organisms is necessary?

a) Attraction

b) Survival

c) Infection

d) Death

Answer: b


16. Maximum productivity is found in which of the following ecosystem?

a) Grassland

b) Desert

c) Temperate forests

d) Tropical rainforests

Answer: d


17. Which one of the following is an example of the man-made terrestrial ecosystem?

a) Botanical gardens

b) Grasslands

c) Rivers

d) Forests

Answer: a


18. Which type of forest is found near the equator?

a) Coniferous forests

b) Grasslands

c) Tropical forests

d) Deciduous forests

Answer: c


19. Which of the following is an example of an artificial ecosystem?

a) Forest

b) Rice field

c) Lake

d) Grassland

Answer: b


20. What are the functional units of nature, where organisms interact with each other and their surroundings?

a) Stratification

b) Zonation

c) Environment

d) Ecosystem

Answer: d


21. What is the place where a particular organism lives called?

a) Factors

b) Niche

c) Habitat

d) Environment

Answer: c


22. What is the physical space occupied by the organism called?

a) Trophic niche

b) Unique niche

c) Multidimensional niche

d) Spatial niche

Answer: d


23. Which type of components are proteins, lipids, and carbohydrates?

a) Biotic

b) Artificial

c) Abiotic

d) Temperate

Answer: c


24. Which one of the following is a man-made aquatic ecosystem?

a) Desert

b) Aquarium

c) Pond

d) River

Answer: b


25. Which one of the following is an abiotic factor?

a) Bacteria

b) Plants

c) Climate

d) Animals

Answer: c


26. Which of the following is an artificial ecosystem?

a) Forests

b) Croplands

c) Deserts

d) Estuaries

Answer: b


27. What kind of interaction does an ecosystem involve?

a) Individual

b) Population

c) Biotic factors

d) Communities and their physical environment

Answer: d


28. Which of the following is an abiotic component?

a) Light

b) Plants

c) Planktons

d) Animals

Answer: a


FAQs on Organism and its Environment

Q1. What is an organism?

Answer: An organism is any living being, whether it is a plant, animal, fungus, or bacteria. All organisms have certain requirements for survival, such as food, water, shelter, and air.

Q2. What is the environment?

Answer: The environment is everything that surrounds an organism and the conditions that affect its life. The environment includes both the biotic (living) and abiotic (nonliving) factors.

Q3. How do organisms interact with their environment?

Answer: Organisms interact with their environment in many ways, such as obtaining food and water, obtaining shelter, and reproducing.

Q4. What are some examples of environmental factors that can affect an organism?

Answer: Some examples of environmental factors that can affect an organism include temperature, light, and water.

Q5. What are some ways that humans have impacted the environment?

Answer: Some ways that humans have impacted the environment include pollution, deforestation, and overfishing.

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