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in Plant and Animal Hormones by (46.0k points)

Assertion and Reasoning:

Direction: In each of the following questions a statement of assertion (A) is given and a corresponding statement of reason (R) is given just below it. Mark the correct statement as.

1. Assertion (A): Ethylene is a plant hormone, which can transfer from one plant to another plant.

Reason (R): Ethylene is a gaseous hormones in plants.

(a) If both A and R are true and R is correct explanation of A. 

(b) If both A and R are true but R is not the correct explanation of A.

(c) A is true but R is false. 

(d) Both A and R are false.

2. Assertion (A): Senescence is induced by the application of cytokinin in plants.

Reason (R): Cytokinin promotes the degradation of chlorophyll and nucleic acids.

(a) If both A and R are true and R is correct explanation of A. 

(b) If both A and R are true but R is not the correct explanation of A. 

(c) A is true but R is false. 

(d) Both A and R are false.

3. Assertion (A): ABA plays an important role in plants during water stress.

Reason (R): ABA promotes stomatal closing during water stress.

a) If both A and R are true and R is correct explanation of A.

(b) If both A and R are true but R is not the correct explanation of A.

(c) A is true but R is false. 

(d) Both A and R are false.

4. Assertion (A): Gibberellin is a bolting hormone. 

Reason (R): Gibberellin induces parthenocarpy in fruits. 

(a) If both A and R are true and R is correct explanation of A.

(b) If both A and R are true but R is not the correct explanation of A. 

(c) A is true but R is false. 

(d) Both A and R are false.

5. Assertion (A): Bolting effect in plants is performed by Gibberellin.

Reason (R): Gibberellin induce internode elongation.

(a) If both A and R are true and R is correct explanation of A. 

(b) If both A and R are true but R is not the correct explanation of A.

(c) A is true but R is false. 

(d) Both A and R are false.

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1 Answer

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by (52.4k points)

1. (a) If both A and R are true and R is correct explanation of A.

2. (d) Both A and R are false.

3. (a) If both A and R are true and R is correct explanation of A.

4. (d) Both A and R are false.

5. (a) If both A and R are true and R is correct explanation of A.

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