MEDIUM
10th CBSE
IMPORTANT
Earn 100

Explain the phenomenon of ”biological magnification". How does it affect organisms belonging to different trophic levels, particularly the tertiary consumers?

Important Questions on Our Environment

EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE BIOLOGY For Class X>Chapter 5 - Our Environment>EXERCISE>Q 5

State whether the following is biodegradable or non-biodegradable.

Cattle dung: _____.

EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE BIOLOGY For Class X>Chapter 5 - Our Environment>EXERCISE>Q 1
Which one of the following is an artificial ecosystem?
MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE BIOLOGY For Class X>Chapter 5 - Our Environment>EXERCISE>Q 4
In the given food chain, suppose the amount of energy at the fourth trophic level is 5 kJ, what will be the energy available at the producer level? Grass → Grasshopper →Frog→ Snake → Hawk
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE BIOLOGY For Class X>Chapter 5 - Our Environment>EXERCISE>Q 5
Accumulation of non-biodegradable pesticides in the food chain in increasing amount at each higher trophic level is known as
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE BIOLOGY For Class X>Chapter 5 - Our Environment>EXERCISE>Q 6
Depletion of ozone is mainly due to
MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE BIOLOGY For Class X>Chapter 5 - Our Environment>EXERCISE>Q 12
In the following groups of materials, which group(s) contains only non-biodegradable items?
(i) Wood, paper, leather
(ii) Polythene, detergent, PVC
(iii) Plastic, detergent, grass
(iv) Plastic, bakelite, DDT
MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE BIOLOGY For Class X>Chapter 5 - Our Environment>EXERCISE>Q 13
Which of the following limits the number of trophic levels in a food chain?
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE BIOLOGY For Class X>Chapter 5 - Our Environment>EXERCISE>Q 21
Disposable plastic plates should not be used because