Assertion and Reason Questions for Class 10 Science Chapter 15 Our Environment PDF

Our Environment Class 10 Assertion and Reason Type Questions have been prepared by CBSE Experts. Solve Assertion and Reason Questions for Class 10 Science Chapter 15 Our Environment for better understanding. Assertion Reason question for Class 10 Science Chapter 15 is prepared on the latest exam pattern.

Students can solve Assertion and Reason Questions for Class 10 Science to boost their preparation Our Environment 10 Assertion and Reason Type Questions are provided to help students tackle the question asked in the board exam.

Our Environment Class 10 Assertion Reason Questions

The following questions consist of two statements – Assertion (A) and Reason (R). Answer these questions selecting the appropriate option given below:
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.

Q.1. Assertion: Polythene bags and plastic containers are non-biodegradable substances.
Reason: They can be broken down by microorganisms in natural simple harmless substances.

(c) A is true but R is false.


Q.2. Assertion: The concentration of harmful chemicals is least in human beings.
Reason: Man is at the apex of the food chain.

(d) Assertion is false but reason is true


Q.3. Assertion: Ozone is formed in upper atmosphere by O2 in presence of UV radiations.
Reason: Ozone depletion will lead to UV rays reaching earth which may cause skin cancer.

(b) Both A and R are true but R is not the correct explanation of A.


Q.4. Assertion: Aquarium needs regular cleaning
Reason: There are no microbes to clean water in aquarium, therefore, it needs to be regularly cleaned.

(a) Both A and R are true and R is the correct explanation of A.


Q.5.Assertion :food ensures survival of all trophic levels.
Reason : phytoplanktons are primary consumers.

(b) Both A and R are true but R is not the correct explanation of A.


Q.6.Assertion : The various components of an ecosystem are interdependent
Reason: food chain and web are formed due to linkage in organisms .

(a) Both A and R are true and R is the correct explanation of A.


Q.7.Assertion :Each step in a food chain is called a trophic level.
Reason :Trophic levels are formed by both plants and animals.

(a) Both A and R are true and R is the correct explanation of A.


Q.8.Assertion :food web consists of only producers.
Reason :specific enzymes are required for breakdown of substances in environment.

(d) Assertion is false but reason is true


Q.9.Assertion :The function of consumers is to convert organic compound into inorganic compound.
Reason :Green plants are called the producers.

(d) Assertion is false but reason is true


Q.10.Assertion :An ecosystem is made of different types of community.
Reason :ecosystem is community of different organisms that interact with each other and surroundings

(a) Both A and R are true and R is the correct explanation of A.


We hope the given Our Environment Class 10 Assertion and Reason Questions will help you. Please practice Our Environment Class 10 Assertion and Reason Questions to boost your score in Board Exam. If you have any queries regarding Our Environment Class 10 Science Assertion and Reason Questions, contact us and we will get back to you soon.

By Team of CBSE Expert

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