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Role of Auxin

One of the fo...

Question

One of the following is a natural cytokinin?

A

BAP

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B

Zeatin

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C

2, 4-D

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D

ABA

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Solution

The correct option is B
Zeatin

Zeatin– a naturally occurring cytokinin.
1.Promotes callus initiation when combined with auxins, concentration 1 ppm.
2. Promotes fruit set. Zeatin 100 ppm + GA3 500 ppm + NAA 20 ppm sprayed at 10th, 25th, 40th day after blossom.
3. Retards yellowing for vegetables, 20 ppm, sprayed.
4. Causes auxiliary stems to grow and flower.
5. Stimulates seed germination and seedling growth

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Similar questions

Q. Match the following:

Column I	Column II
a. Ethephon	(i) GA
b. Terpene	(ii) Ethylene
c. Zeatin	(iii) Natural auxin
d. IAA	(iv) Cytokinin

Q. Match the following and choose the correct combination.

	List I		List II
A	Zeatin	1	Flowering hormone
B	Florigen	2	Synthetic auxin
C	IBA	3	Cytokinin
D	NAA	4	Natural auxin

Q. Match the following column I with column II:

Column I	Column II
A. Ethephon	(i) GA
B. Terpene	(ii) Ethylene
C. Zeatin	(iii) Natural auxin
D. IAA	(iv) Cytokinin

Q. Match the following column I with column II:

Column I	Column II
A. Ethephon	(i) GA
B. Terpene	(ii) Ethylene
C. Zeatin	(iii) Natural auxin
D. IAA	(iv) Cytokinin

Q. Which ones regulate stomatal movements ?
(a) IAA
(b)

G A_{3}

(c) Zeatin
(d) ABA.

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