Class 10 Science MCQ Chapter 15 Our Environment, Class 10 Science MCQ Question Answer, Class 10 Science Multiple Choice Question Answer to each chapter is provided in the list of SCERT Science Class 10 Objective Types Question Answer so that you can easily browse through different chapters and select needs one. Class 10 Science MCQ Chapter 15 Our Environment Question Answer can be of great value to excel in the examination.
SCERT Class 10 Science MCQ Chapter 15 Our Environment
SCERT Class 10 General Science MCQ Chapter 15 Our Environment Notes covers all the exercise questions in SCERT Science Textbooks. The NCERT Class 10 Science MCQ Chapter 15 Our Environment provided here ensures a smooth and easy understanding of all the concepts. Understand the concepts behind every chapter and score well in the board exams.
Our Environment
Chapter – 15
Multiple Choice Questions & Answers
1. Which of the following is non-biodegradable?
(a) Wood.
(b) Paper.
(c) Cotton clothes.
(d) Plastics.
Ans: (d) Plastics.
2. Which of the following is an artificial ecosystem?
(a) Garden.
(b) Pond.
(c) Forest.
(d) Lake.
Ans: (a) Garden.
3. Which of the following organism can be called producer?
(a) Bacteria.
(b) Fungi.
(c) Blue-green algae.
(d) Herbivores.
Ans: (c) Blue-green algae.
4. Which of the following organism plays the role of a decomposer?
(a) Blue-green algae.
(b) Bacteria.
(c) Green plants.
(d) Parasites.
Ans: (b) Bacteria.
5. To which of the following trophic labels do autotrophs or producers belong-
(a) 1st.
(b) 2nd.
(c) 3rd.
(d) 4th.
Ans: (a) 1st.
6. To which of the following trophic labels do herbivores or primary consumers belong-
(a) 1st.
(b) 2nd.
(c) 3rd.
(d) 4th.
Ans: (a) 2nd.
7. To which of the following trophic levels do small carnivores or secondary consumers belong-
(a) 1st.
(b) 2nd.
(c) 3rd.
(d) 4th.
Ans: (c) 3rd
8. The animals which belong to the fourth trophic level –
(a) Autotrophs.
(b) Small carnivores.
(c) Large carni vores.
(d) Herbivores.
Ans: (c) large carni vores.
9. What percent of Sun’s light energy is trapped by the green plants to convert into food energy?
(a) 10%
(b) 1%
(c) 90%
(d) 100%
Ans: (b)1%
10. The average amount of organic matter that reaches the next level of consumer from the previous level-
(a) 1%
(b) 20%
(c) 40%
(d) 10%
Ans: (d)10%
11. Which of the following organisms has the maximum number in an ecosystem?
(a) Producers.
(b) Primary consumer or herbivores.
(c) Secondary consumer or small carnivores.
(d) Tertiary consumer or large carnivores.
Ans: (a) Producers.
12. Which of the following substances is responsible for the depletion of ozone layer?
(a) Oxygen.
(b) Ultraviolet rays.
(c) Chlorofluorocarbon.
(d) Helium.
Ans: (c) Chlorofluorocarbon.
13. Which of the following groups contain only biodegradable items?
(a) Grass, flowers and leather.
(b) Grass, wood and plastic.
(c) Fruit-peels, cake and lime-juice.
(d) Cake, wood and grass.
Ans: (a), (c), (d)
14. Which of the following constitute a food-chain?
(a) Grass, wheat and mango.
(b) Grass, goat and human.
(c) Goat, cow and elephant.
(d) Grass, fish and goat.
Ans: (b) Grass, goat and human.
15. Which of the following are environment-friendly practices?
(a) Carrying cloth- bags to put purchases in while shopping.
(b) Switching off unnecessary lights and fans.
(c) Walking to school instead of getting your mother to drop you on her scooter.
(d) All of the above.
Ans: (d) All of the above.
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