Match each item in Column I with one in Column II and select the correct answer from the codes given:

 

PGR

 

Chemical nature

A

Indole compounds

P

Gibberellins

B

Adenine derivatives

Q

ABA

C

Terpenes

R

Auxins

D

Derivatives of carotenoids

S

Cytokinins

Codes

 

A

B

C

D

1.

R

S

P

Q

2.

R

S

Q

P

3.

S

R

P

Q

4.

S

R

Q

P

Subtopic:  Growth Hormones & Auxin |
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Which of the following is not a use of plant PGR ethylene?
1. Initiation of flowering and synchronizing fruit set in pineapples.
2. Induction of flowering in mango.
3. Ethephon, most common source of ethylene, hastens fruit ripening in tomatoes.
4. Induction of parthenocarpy in tomatoes.

Subtopic:  Growth Hormones & Auxin | Ethylene |
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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:-

(a) (b) (c) (d)
1. (ii) (iii) (iv) (i)
2. (iii) (iv) (ii) (i)
3. (iv) (iii) (ii) (i)
4. (iv) (ii) (i) (iii)
Subtopic:  Growth Hormones & Auxin | Gibberellin | Ethylene | Abscisic Acid |
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Parthenocarpy in tomato plants can be induced by:

1. Auxins 2. Gibberellins
3. ABA 4. Cytokinins
Subtopic:  Growth Hormones & Auxin |
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