Match the following concerning the activity/function and the phytohormone involved :-

(a) Fruit ripener         (i) Abscisic acid

(b) Herbicide             (ii) GA 3

(c) Bolting agent       (iii) 2, 4-D

(d) Stress hormone   (iv) Ethephon

Select the correct option from following :-

1. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

2. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)

3. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)

4. (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)

Which hormone is responsible for fruit ripening :

1. Ethylene

2. Auxin

3. Ethyl chloride

4. Cytokinin

What is necessary for ripening of fruits :
1.  80% of ethylene
2.  Abscissic acid
3.  2, 4 D
4.  A.M.O. – 16