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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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Subjects
Science CBSE
Class 10
Our environment
Ecosystem and energy flow

2. NCERT exemplar and book back objective type questions

Exercise condition:

4 m.

Choose the best answer:

1. Which group of organisms are not constituents of a food chain?

(i) Grass, lion, rabbit, wolf
(ii) Plankton, man, fish, grasshopper
(iii) Wolf, grass, snake, tiger
(iv) Frog, snake, eagle, grass, grasshopper

(i) and (iii)
(ii) and (iii)
(i) and (iv)
(iii) and (iv)

2. What will happen if deer is missing in the food chain given below?

Grass

$\rightarrow$ Deer

$\rightarrow$ Tiger

The population of tiger increases
Tiger will start eating grass
The population of tiger decreases and the population of grass increases
The population of grass decreases

3. Which of the following groups contain only biodegradable items?

Fruit-peels, cake and lime-juice
Grass, flowers and leather
Cake, wood and grass
Grass, wood and plastic

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