MCQ on Our Environment

CBSE/NCERT 10th Class MCQ CBSE/NCERT 10th Class MCQ on Science

Science MCQ on Our Environment:


1- All interacting organisms in an area together with the non-living constituents of the environment form an……………..

(A) Ecosystem

(B) Environment

(C) Carbon

(D) None of the above


2- What is/are the abiotic components in ecosystem?

(A) Soil

(B) Wind

(C) Rainfall

(D) All of the above


3- What type of ecosystem are forest, ponds and lakes?

(A) Artificial

(B) Natural

(C) Both

(D) None of the above


4- Which of the following can be grouped under consumer, producer and decomposers in ecosystem?

(A) Plants

(B) Environment

(C) Organisms

(D) All of the above


5- Which organisms can make organisms compound like sugar and starch from inorganic substances by using radiant energy of the Sun in presence of chlorophyll?

(A) Green Plants

(B) Bacteria

(C) Fungi

(D) None of the above


6- Which of the following can be classified variously as herbivores, carnivores, omnivores and parasites?

(A) Producers

(B) Consumers

(C) Decomposers

(D) All of the above


7- What is the functional Unit of Environment?

(A) Carbon

(B) Ecosystem

(C) Environment

(D) None of the above


8- Green plants and Algae are examples of

(A) Decomposer

(B) Consumer

(C) Producers

(D) All of the above


9- Food chain consists of …………………

(A) The sun

(B) Consumer

(C) Producer

(D) All of the above


10- Ozone is a molecule formed by how many atoms of Oxygen?

(A) 3

(B) 2

(C) 5

(D) 1



1-(A), 2-(D), 3-(B), 4-(C), 5-(D), 6-(B), 7-(B), 8-(C), 9-(D), 10-(A)