MEDIUM
10th CBSE
IMPORTANT
Earn 100

 Why are crop fields known as artificial ecosystem?

Important Questions on Our Environment

MEDIUM
10th CBSE
IMPORTANT
NCERT EXEMPLAR PROBLEMS-SOLUTIONS SCIENCE Class X>Chapter 15 - Our Environment>Short Answer Type Questions>Q 26
Differentiate between biodegradable and non-biodegradable substances. Give examples.
MEDIUM
10th CBSE
IMPORTANT
NCERT EXEMPLAR PROBLEMS-SOLUTIONS SCIENCE Class X>Chapter 15 - Our Environment>Short Answer Type Questions>Q 27
Suggest one word for the physical and biological world where we live in.
EASY
10th CBSE
IMPORTANT
NCERT EXEMPLAR PROBLEMS-SOLUTIONS SCIENCE Class X>Chapter 15 - Our Environment>Short Answer Type Questions>Q 28
Suggest one word for each level of the food chain where the transfer of energy takes place.
EASY
10th CBSE
IMPORTANT
NCERT EXEMPLAR PROBLEMS-SOLUTIONS SCIENCE Class X>Chapter 15 - Our Environment>Short Answer Type Questions>Q 29
Suggest one word for the physical factors like temperature, rainfall, wind and soil of an ecosystem, whether it is biotic or abiotic?
EASY
10th CBSE
IMPORTANT
NCERT EXEMPLAR PROBLEMS-SOLUTIONS SCIENCE Class X>Chapter 15 - Our Environment>Short Answer Type Questions>Q 30

Suggest one word for organisms which depend on the producers either directly or indirectly for food.

EASY
10th CBSE
IMPORTANT
NCERT EXEMPLAR PROBLEMS-SOLUTIONS SCIENCE Class X>Chapter 15 - Our Environment>Short Answer Type Questions>Q 31
Explain the role of decomposers in the environment.
EASY
10th CBSE
IMPORTANT
NCERT EXEMPLAR PROBLEMS-SOLUTIONS SCIENCE Class X>Chapter 15 - Our Environment>Short Answer Type Questions>Q 32

Select the mismatched pair in the following and correct it.

(a) Bio-magnification Accumulation of chemicals at the successive trophic levels of a food chain 
(b) Ecosystem Biotic components of the environment 
(c) Aquarium A man-made ecosystem
(d) Parasites  Organisms which obtain food from other living organisms
MEDIUM
10th CBSE
IMPORTANT
NCERT EXEMPLAR PROBLEMS-SOLUTIONS SCIENCE Class X>Chapter 15 - Our Environment>Short Answer Type Questions>Q 33
We do not clean ponds or lakes, but an aquarium needs to be cleaned. Why?