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Question (31)

QN0034372

Which organism in a food chain depends directly on plants for food?

(A) Herbivore
(B) Carnivore
(C) Decomposer
(D) Predator

Correct Answer: A

Explanation:

Herbivores eat plants directly.

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Question (32)

QN0034373

In the food chain Phytoplankton → Small Fish → Large Fish → Bird, which organism is the secondary consumer?

(A) Phytoplankton
(B) Small Fish
(C) Large Fish
(D) Bird

Correct Answer: C

Explanation:

Large fish feed on small fish.

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Question (33)

QN0034374

If a food chain contains 100 plants, 20 rabbits, and 4 foxes, what is the ratio of rabbits to total animals?

(A) 1 : 6
(B) 5 : 6
(C) 1 : 5
(D) 4 : 5

Correct Answer: B

Explanation:

Total animals = 24; 20 : 24 = 5 : 6.

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Question (34)

QN0034375

Which statement is true about food chains?

(A) They begin with carnivores.
(B) They show feeding relationships.
(C) They include only animals.
(D) They do not involve plants.

Correct Answer: B

Explanation:

Food chains represent feeding relationships.

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Question (35)

QN0034376

If the population of rabbits decreases from 50 to 35, by how many rabbits has it decreased?

(A) 10
(B) 15
(C) 20
(D) 25

Correct Answer: B

Explanation:

50 − 35 = 15.

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Question (36)

QN0034377

Which group forms the base of most food chains?

(A) Herbivores
(B) Carnivores
(C) Producers
(D) Decomposers

Correct Answer: C

Explanation:

Producers form the base of food chains.

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Question (37)

QN0034378

In a habitat, 18 snakes feed on 54 frogs. What is the ratio of frogs to snakes?

(A) 2 : 1
(B) 3 : 1
(C) 4 : 1
(D) 5 : 1

Correct Answer: B

Explanation:

54 : 18 = 3 : 1.

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Question (38)

QN0034379

A decrease in producers is most likely to affect ________.

(A) only decomposers
(B) primary consumers first
(C) rocks and soil only
(D) water level only

Correct Answer: B

Explanation:

Primary consumers depend directly on producers.

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Question (39)

QN0034380

Which organism occupies the highest trophic level in the chain Grass → Grasshopper → Frog → Snake → Eagle?

(A) Frog
(B) Snake
(C) Eagle
(D) Grasshopper

Correct Answer: C

Explanation:

Eagle is the top consumer in the chain.

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Question (40)

QN0034381

Why is every link in a food chain important?

(A) Because each organism helps transfer energy through the ecosystem.
(B) Because only producers matter.
(C) Because consumers make food.
(D) Because decomposers start food chains.

Correct Answer: A

Explanation:

Each organism contributes to the flow of energy in the ecosystem.

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Question (31)

Which organism in a food chain depends directly on plants for food?

Explanation:

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Question (32)

In the food chain Phytoplankton → Small Fish → Large Fish → Bird, which organism is the secondary consumer?

Explanation:

Link:

Question (33)

If a food chain contains 100 plants, 20 rabbits, and 4 foxes, what is the ratio of rabbits to total animals?

Explanation:

Link:

Question (34)

Which statement is true about food chains?

Explanation:

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Question (35)

If the population of rabbits decreases from 50 to 35, by how many rabbits has it decreased?

Explanation:

Link:

Question (36)

Which group forms the base of most food chains?

Explanation:

Link:

Question (37)

In a habitat, 18 snakes feed on 54 frogs. What is the ratio of frogs to snakes?

Explanation:

Link:

Question (38)

A decrease in producers is most likely to affect ________.

Explanation:

Link:

Question (39)

Which organism occupies the highest trophic level in the chain Grass → Grasshopper → Frog → Snake → Eagle?

Explanation:

Link:

Question (40)

Why is every link in a food chain important?

Explanation:

Link:

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