Name any two artificial ecosystems.

Important Questions on Our Environment

EASY

10th CBSE

IMPORTANT

SCIENCE BIOLOGY Class-10>Chapter 5 - Our Environment>LET US PRACTICE MORE>Q 15

Which category of organisms forms the first step of a food chain. (Producers/ consumers/ decomposers)

EASY

10th CBSE

IMPORTANT

SCIENCE BIOLOGY Class-10>Chapter 5 - Our Environment>LET US PRACTICE MORE>Q 16

What are the various steps of a food chain called?

EASY

10th CBSE

IMPORTANT

SCIENCE BIOLOGY Class-10>Chapter 5 - Our Environment>LET US PRACTICE MORE>Q 17

What name is given to the network of food chains?

EASY

10th CBSE

IMPORTANT

SCIENCE BIOLOGY Class-10>Chapter 5 - Our Environment>LET US PRACTICE MORE>Q 18

Name two groups of organisms which act as decomposers in an ecosystem.

EASY

10th CBSE

IMPORTANT

SCIENCE BIOLOGY Class-10>Chapter 5 - Our Environment>LET US PRACTICE MORE>Q 19

What type of waste plastic, polythene and pesticides are?

EASY

10th CBSE

IMPORTANT

SCIENCE BIOLOGY Class-10>Chapter 5 - Our Environment>LET US PRACTICE MORE>Q 20

To which category of components the gas Freon belongs? (Write its full form).

EASY

10th CBSE

IMPORTANT

SCIENCE BIOLOGY Class-10>Chapter 5 - Our Environment>LET US PRACTICE MORE>Q 21

What protects the biotic communities of ecosystems from damaging effects of ultraviolet rays?

EASY

10th CBSE

IMPORTANT

SCIENCE BIOLOGY Class-10>Chapter 5 - Our Environment>LET US PRACTICE MORE>Q 1

Give the meaning of the terms biodegradable and non-biodegradable.