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Class 10 Science Chapter 13 Assertion and Reason Questions - Our Environment

Q1:

Question for Assertion & Reason Type Questions: Our Environment
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): The concentration of harmful chemicals is more in human beings.

Reason (R): Man is at the apex of the food chain.

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Q2:

Question for Assertion & Reason Type Questions: Our Environment
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): First trophic level in a food chain is always a green plant.

Reason (R): Green plants are called producers.

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Q3:

Question for Assertion & Reason Type Questions: Our Environment
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): Herbivores are called first order consumers.

Reason (R): Tiger is a top carnivore.

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Q4:

Question for Assertion & Reason Type Questions: Our Environment
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion: Food chain is responsible for the entry of harmful chemicals in our bodies.

Reason: The length and complexity of food chains vary greatly.

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Q5:

Question for Assertion & Reason Type Questions: Our Environment
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion: Greater number of individuals are present in lower trophic levels.

Reason: The flow of energy is unidirectional.

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Q6:

Question for Assertion & Reason Type Questions: Our Environment
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): Flow of energy in a food chain is unidirectional.

Reason (R): Energy captured by autotrophs does not revert back to the solar input and it passes to the herbivores.

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Q7:

Question for Assertion & Reason Type Questions: Our Environment
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): Decomposers keep the environment clean.

Reason (R): They recycle matter by breaking down the organic remains and waste products of plants and animals.

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Q8:

Question for Assertion & Reason Type Questions: Our Environment
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): Polythene bags and plastic containers are non-biodegradable substances.

Reason (R): They can be broken down by microorganisms in natural simple harmless substances.

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Q9:

Question for Assertion & Reason Type Questions: Our Environment
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): Ozone is both beneficial and damaging.

Reason (R): Stop the release of chlorofluorocarbons to protect the ozone.

View Solution

Q10:

Question for Assertion & Reason Type Questions: Our Environment
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion (A): CFCs deplete the ozone layer.

Reason (R): CFCs are used as refrigerants and in fire extinguishers.

View Solution

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