Which one of the following pairs, is not correctly matched?
1. Abscisic acid - Stomatal closure
2. Gibberellic acid - Leaf fall
3. Cytokinin - Cell division
4. IAA - Cell wall elongation

Which one of the following pairs, is not correctly matched?

(1) IAA – Cell wall elongation

(2) Abscisic acid – Stomatal closure

(3) Gibberellic acid – Leaf fall

(4) Cytokinin – Cell division

Assertion (A) : Ethylene helps the plants to increase their absorption surface.
Reason (R) : It promotes root growth and root hair formation. 

1. Both (A) and reason are true and (R) is the correct explanation of (A)
2. Both (A) assertion and (R) are true but (R)is not the correct explanation of (A)
3. (A) is true but (R) is false 
4. Both (A) and (R) are false statements

A : Breaking of seed dormancy by giving cold treatment to seedling in presence of air is vernalisation. 

B : Vernalisation increases vegetative growth period to bring early flowering. 

1. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark(1).

2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2).

3. If Assertion is true statement but reason is false, then mark (3).

4. If both Assertion and Reason are false statements, then mark (4).

A : Ethephon hastens fruit ripening in tomatoes.

R : Ethephon releases ethylene readily.

1 If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark(1).

2 If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2).

3 If Assertion is true statement but reason is false, then mark (3).

4 If both Assertion and Reason are false statements, then mark (4).

Assertion (A) : Promotion of flowering by a period of low temperature is called vernalisation.
Reason (R) : Vernalisation prevents precocious reproductive development.

1. Both (A) and reason are true and (R) is the correct explanation of (A)
2. Both (A) assertion and (R) are true but (R)is not the correct explanation of (A)
3. (A) is true but (R) is false 
4. Both (A) and (R) are false statements

A: 2,4-D is widely used as an herbicide.

R: It is used to kill mature monocotyledonous plants.

Two leaves with respective growth are depicted below.

Consider A' and B' or final size after growth. Which of following statement explain the above situation appropriately :-

1. Relative growth rate of A is twice as that of B relative growth rate
2. Absolute growth rate is same in A and B
3. Absolute growth rate of B is 1/10 of A absoulate growth rate
4. Relative growth rate of B is same as A relative growt

Consider the following statements:

I. In low concentrations, auxin can inhibit ethylene formation and transport of precursor

   in plants;
II. High concentrations of auxin can induce the synthesis of ethylene.

III. Therefore, the high concentration can induce maleness of flowers in some species.

The correct statements are:

(1) I, II, III

(2) I, II

(3) I, III

(4) II, III