MEDIUM
10th CBSE
IMPORTANT
Earn 100

Draw a diagram of a pond ecosystem and write any one aquatic food chain.

Important Questions on Our Environment

EASY
10th CBSE
IMPORTANT
SCIENCE BIOLOGY Class-10>Chapter 5 - Our Environment>KNOWLEDGE BASKET>Q I
_____ (Mesosphere/ Ozone/ Nitrogen/ CFC) shield checks the entry of UV rays on to earth.
EASY
10th CBSE
IMPORTANT
SCIENCE BIOLOGY Class-10>Chapter 5 - Our Environment>KNOWLEDGE BASKET>Q I
_____ is the burning of wastes at a very high temperature in presence of O2.
EASY
10th CBSE
IMPORTANT
SCIENCE BIOLOGY Class-10>Chapter 5 - Our Environment>KNOWLEDGE BASKET>Q I

Fill in the blank with the correct term from the bracket.

When DDT enters a food chain, it leads to _____. (biomagnification/eutrophication/bloom)

EASY
10th CBSE
IMPORTANT
SCIENCE BIOLOGY Class-10>Chapter 5 - Our Environment>KNOWLEDGE BASKET>Q I
Each step of a food chain is called a _____ level.
EASY
10th CBSE
IMPORTANT
SCIENCE BIOLOGY Class-10>Chapter 5 - Our Environment>KNOWLEDGE BASKET>Q II
Decomposers are the least important components of an ecosystem.
MEDIUM
10th CBSE
IMPORTANT
SCIENCE BIOLOGY Class-10>Chapter 5 - Our Environment>KNOWLEDGE BASKET>Q II
Producers are important but flesh eaters can be killed without harming the ecosystem.
EASY
10th CBSE
IMPORTANT
SCIENCE BIOLOGY Class-10>Chapter 5 - Our Environment>KNOWLEDGE BASKET>Q II
Recycling mineral is an important function of an ecosystem.
MEDIUM
10th CBSE
IMPORTANT
SCIENCE BIOLOGY Class-10>Chapter 5 - Our Environment>KNOWLEDGE BASKET>Q II
Depletion of ozone mainly affects developed countries.