Assertion: Etiolation is an energy conserving strategy in plants.
Reason: It helps plants growing in the dark reach the light before they die.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false

1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
3. If the assertion is true but the reason is false
4. If both the assertion and reason are false

Assertion: Many plant biologists prefer the term ‘plant growth regulator’ rather than ‘plant hormone’ to describe organic compounds that modify or control one or more physiological processes within a plant.
Reason: Plant hormones do not activate a signal transduction pathway.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false

Assertion: Auxin, produced predominantly in shoot tips, is transported from cell to cell down the stem and this is called as polar transport.
Reason: The polar transport is due to the gravitational forces.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false

Assertion: Over a certain concentration range, Auxin stimulates elongation of cells within young developing shoots.
Reason: In shoot’s region of elongation, auxin stimulates the plasma membrane proton pumps.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R): 

In the light of the above statements choose the correct answer from the options given below:

Assertion: If leaves removed from a plant are dipped in a cytokinin solution, they stay green much longer than otherwise:
Reason: Cytokinins have an anti-aging effect of certain plant organs like leaves.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R): 

In the light of the above statements choose the correct answer from the options given below:

Assertion: Cytokinins have also been used against plants by certain pathogens like Agrobacterium tumefaciens.
Reason: Coevolution does not always work to the plant’s advantage.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R): 

 
In the light of the above statements choose the correct answer from the options given below:

Assertion: Some seeds that normally require certain environmental conditions to germinate, break dormancy if they are treated with gibberellins.
Reason: Gibberellins stimulate the synthesis of digestive enzymes that mobilize stored nutrients

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false