Which of the following is a primary consumer in a food chain? MCQ with Answer and Explanation

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Which of the following is a primary consumer in a food chain?

A. Fungi

B. Grasshopper

C. Lion

D. Eagle

Answer: Option B

Solution (By JKSSB Mock Tests)

Primary consumers are herbivores that feed directly on producers (plants). Grasshopper feeds on grass/plants, thus a primary consumer. Lion and eagle are secondary/tertiary consumers (carnivores). Fungi are decomposers. In a food chain: Grass (producer) → Grasshopper (primary consumer) → Frog (secondary consumer) → Snake (tertiary consumer) → Eagle (quaternary consumer). Energy flows unidirectionally.

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Question #1

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Assertion (A): Genetic variation is essential for evolution.
Reason (R): Without variation, natural selection cannot occur because there are no differences to select from.

A. A false, R true.

B. Both A and R are true, but R is not the correct explanation.

C. Both A and R are true, and R is the correct explanation.

D. A true, R false.

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Correct Answer: Option C

Explanation:
Genetic variation provides the raw material for natural selection. If all individuals were identical, selection could not favor any. R correctly explains A.

This question belongs to: Science Biology

Question #2

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Consider the following statements about viruses:
1. The tobacco mosaic virus was the first virus discovered.
2. Viruses can have a protein coat called capsid.
3. Viruses can reproduce outside host cells.
Which of the above is/are correct?

A. 1, 2, and 3

B. 1 and 2 only

C. 2 and 3 only

D. 1 and 3 only

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Correct Answer: Option B

Explanation:
TMV was discovered by Ivanovsky. Viruses have a capsid. They require host cells to replicate, so 3 is incorrect.

This question belongs to: Science Biology

Question #3

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Which of the following is an example of an insectivorous plant?

A. Rhizobium

B. Monotropa

C. Drosera

D. Cuscuta

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Correct Answer: Option C

Explanation:
Drosera (sundew) is an insectivorous plant that captures insects with sticky tentacles on leaves to supplement nitrogen in nutrient-poor soils. Cuscuta is a parasitic plant, Monotropa is saprophytic, Rhizobium is a bacterium, not a plant. Insectivorous plants include pitcher plant (Nepenthes), Venus flytrap, and bladderwort. They are autotrophic but supplement nitrogen.

This question belongs to: Science Biology

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