Match the terms given in column I with the terms given in column II and column III having the same meaning: Column I Column II Column III (i) Secondary consumer a. Herbivore 1.1st tropic level (ii) Primary consumer b. Autotroph 2. 3rd tropic level (iii) Producer c. Carnivore 3. 4th tropic level (iv) Tertiary consumer d. Large carnivore 4. 2nd tropic level

(i)-c-2 Carnivore forms the secondary consumer as it feeds on the flesh of another animal and it is the 3rd tropic level in the food chain. (ii)-a-4 Herbivore forms the primary consumer as it feeds on plants and it is 2nd tropic level in food chain. (iii)-b-1 Autotrophs are the producers, and they form the 1st tropic level in the food chain. (iv)-d-3 Large carnivores form the tertiary consumer and it is the 4th tropic level in the food chain. The fourth trophic level includes bird predators and foxes. Column I Column II Column III (i) Secondary consumer c. Carnivore 2. 3rd tropic level (ii) Primary consumer a. Herbivore 4. 2nd tropic level (iii) Producer b. Autotroph 1.1st tropic level (iv) Tertiary consumer d. Large carnivore 3. 4th tropic level

(a) Sl No. Column I Column II Column III (i) Secondary consumer Herbivore 1st trophic level (ii) Primary consumer Autotroph 3rd trophic level (iii) Producer Carnivore 4th trophic level (iv) Tertiary consumer Large carnivore 2nd trophic level Give one example of a food chain having four organisms. Below each organism write the three appropriate terms from the part (a) above which you think it represents.

Food chain is a series of arrangement of organisms that feed on other organisms. There is a transfer of energy from one group to another group. We can represent the solution in the following format:- An insect which belongs to the primary consumer in the given food chain is a herbivore .

MEDIUM

10th CBSE

IMPORTANT

Earn 100

Some hunters are roaming in the lush green forest of Africa. They spot a deer and kill it. They decide to roast the deer there and then eat it. When the hunters had just finished enjoying the feast of roasted deer, a lion attacks them. The lion kills one of the hunters and eats his flesh.

How does the above food chain differ from the food chain such as: plants $\to$ goat $\to$ man?

Important Questions on Our Environment

MEDIUM

10th CBSE

IMPORTANT

Science for Tenth Class Part - 3 Biology>Chapter 5 - Our Environment>Questions Based on High Order Thinking Skills (HOTS)>Q 78

What would happen to the number of rabbits and grass plants if the number of foxes :
(a) increased?
(b) decreased?

MEDIUM

10th CBSE

IMPORTANT

Science for Tenth Class Part - 3 Biology>Chapter 5 - Our Environment>Questions Based on High Order Thinking Skills (HOTS)>Q 79

What would happen to the number of grass plants and foxes if the number of rabbits:
(a) increased?
(b) decreased?

MEDIUM

10th CBSE

IMPORTANT

Science for Tenth Class Part - 3 Biology>Chapter 5 - Our Environment>Questions Based on High Order Thinking Skills (HOTS)>Q 80

Match the terms given in column I with the terms given in column II and column III having the same meaning:

Column I	Column II	Column III
(i) Secondary consumer	a. Herbivore	1.1st tropic level
(ii) Primary consumer	b. Autotroph	2. 3rd tropic level
(iii) Producer	c. Carnivore	3. 4th tropic level
(iv) Tertiary consumer	d. Large carnivore	4. 2nd tropic level

MEDIUM

10th CBSE

IMPORTANT

Science for Tenth Class Part - 3 Biology>Chapter 5 - Our Environment>Questions Based on High Order Thinking Skills (HOTS)>Q 80

(a)

Sl No.	Column I	Column II	Column III
(i)	Secondary consumer	Herbivore	1st trophic level
(ii)	Primary consumer	Autotroph	3rd trophic level
(iii)	Producer	Carnivore	4th trophic level
(iv)	Tertiary consumer	Large carnivore	2nd trophic level

Give one example of a food chain having four organisms. Below each organism write the three appropriate terms from the part (a) above which you think it represents.

EASY

10th CBSE

IMPORTANT

Science for Tenth Class Part - 3 Biology>Chapter 5 - Our Environment>Very Short Answer Type Questions>Q 1

What percentage of the solar energy is trapped and utilised by the plants?

MEDIUM

10th CBSE

IMPORTANT

Science for Tenth Class Part - 3 Biology>Chapter 5 - Our Environment>Very Short Answer Type Questions>Q 2

What percentage of energy available at the producer level is transferred at successive trophic levels in a food chain? (

0.01 % / 10 %

)

EASY

10th CBSE

IMPORTANT

Science for Tenth Class Part - 3 Biology>Chapter 5 - Our Environment>Very Short Answer Type Questions>Q 3

Name the process in which a harmful chemical enters the food chain and gets concentrated at each trophic level.

EASY

10th CBSE

IMPORTANT

Science for Tenth Class Part - 3 Biology>Chapter 5 - Our Environment>Very Short Answer Type Questions>Q 4

In a food chain consisting of grass, frog, bird and insects, where will the concentration of the harmful chemicals be maximum?

Important Questions on Our Environment

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