Assertion and Reason Questions for Class 10 Science Chapter 13 Our Environment
Assertion and Reason Questions for Class 10 Science Chapter 13 Our Environment has been provided by JEE Wallah to help students score good marks in their CBSE and Competitive exams. Assertion and Reason Questions on Our Environment for class 10 is very important as these questions are asked in the Board Exam. Class 10 science our environment assertion and reason questions will help you check whether you have grasped the conceptual learning or not.
Assertion and Reason Questions for Class 10 Science Chapter 13 Our Environment
Despite the fact that Assertion and reasoning questions on Our Environment class 10 can be solved only by having proper conceptual knowledge, we are giving you some tips that can help you solve Assertion and Reasoning questions for Class 10 Science Our Environment. The tips are : Read the Question Carefully; Analyze the Assertion statement; Analyze the Reason statement; Check if the Reason Statement Explains the Assertion Statement.
Our Environment Class 10 Science Assertion and Reason Questions
1.
(A) - An ecosystem consists of living biological community and its non-living environment.
(R) - Ecosystem functions as self sufficient or independent unit in nature.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer
(b) Both A and R are true and R is not the correct explanation of A.
2.
(A) - Plastic, glass and metal wastes keep accumulating in our surrounding and their amount never reduces with time.
(R) - Plastic, glass and metal wastes are non-biodegradable and they cannot be decomposed by microorganisms.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer
(a) Both A and R are true and R is the correct explanation of A.
3.
(A) - A food chain comprises of producers and consumers.
(R) - Consumers can be herbivores, carnivores and omnivores.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer
(b) Both A and R are true and R is not the correct explanation of A.
4.
(A) - The energy available to deer in a food chain is more as compared to that available to lion.
(R) - Deer occupies second trophic level whereas lion occupies first trophic level in a food chain operating in grassland
ecosystem.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer
(c) A is true but R is false.
5.
(A) - DDT can pass along food chain from crops to man or other animals and harm them.
(R) - DDT is non-biodegradable and cannot be metabolised within bodies of living organisms and accumulates in their
bodies.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer
(a) Both A and R are true and R is the correct explanation of A.
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6.
(A) - Gases used in cooling devices can lead to depletion of ozone layer of atmosphere.
(R) - Carbon monoxide which is widely used as coolant in refrigerator reacts with ozone and destroys it.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer
(c) A is true but R is false.
7.
(A) - The second trophic level of a food chain operating in a grassland is mostly occupied by a carnivore.
(R) - Carnivores feed upon herbivores and are secondary consumers.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer
(d) A is false but R is true.
8.
(A) - If pesticide is present in water bodies then fish eating birds accumulate maximum amount of DDT in their bodies.
(R) - Pesticides are not metabolised within bodies of living organisms and get concentrated at each trophic level leading to bioaccumulation.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer
(a) Both A and R are true and R is the correct explanation of A.
9.
(A) - Most of the solid waste in urban areas is disposed off in landfills.
(R) - Landfills are high lying areas of the ground.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer
(c) A is true but R is false.
10.
(A) - The flow of energy in a food chain operating in an ecosystem is always unidirectional.
(R) - Lots of energy is lost as heat from living organisms at each trophic level of a food chain.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer
(b) Both A and R are true and R is not the correct explanation of A.
11.
(A) - Hospital wastes like used syringes, urine bags, etc. can be incinerated.
(R) - Incineration burns the waste at very high temperature and converts it to ashes.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer
(a) Both A and R are true and R is the correct explanation of A.
12.
(A) - A food chain can have maximum of three trophic levels.
(R) - Energy available at each trophic level keeps on decreasing as we move higher up the food chain.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer
(d) A is false but R is true.
13.
(A) - Using jute bags while shopping is more environment friendly as compared to polythene bags.
(R) - Jute is biodegradable whereas polythene bag is non-biodegradable.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer
(a) Both A and R are true and R is the correct explanation of A.
Read Also:
- Life Processes Assertion and Reason Questions
- Magnetic Effects of Current Assertion and Reason Questions
- Reproduction Assertion and Reason Questions
14.
(A) - Food waste can be converted to compost by burying in a pit dug into ground and used as manure.
(R) - Non-biodegradable wastes like fruit and vegetable peels, tea leaves, broken glass jar are ideal for composting.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer
(c) A is true but R is false.
15.
(A) - Ozone is very important layer of atmosphere.
(R) - Ozone protects the living organisms form harmful UV radiations of sun.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Answer
(a) Both A and R are true and R is the correct explanation of A.
We hope that Assertion and Reason Questions for Class 10 Science Chapter 13 Our Environment will help you in a variety of ways. Solving the Assertion and Reason Questions on Our Environment Class 10 will help you boost your confidence level in the subject overall. If you have any query, please feel free to reach us !