Look at the image below. The circled parts are the site of action for certain PGRs. Identify the PGR that would affect the site and choose the correct option.

a- Gibberellins, b- Abscisic Acid, c- Ethylene, d- Auxins

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a- Abscisic Acid, b- Auxins, c- Gibberellins, d- Ethylene

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a- Auxins, b- Ethylene, c- Gibberellins, d- Abscisic Acid

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a- Ethylene, b- Gibberellins, c- Abscisic Acid, d- Auxin

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Solution

The correct option is A
a- Gibberellins, b- Abscisic Acid, c- Ethylene, d- Auxins

(a) - Gibberellins help in the elongation of the stem by acting on the elongating part of the stem. (b) - Abscisic acid increases senescence and abscission of leaves in plants. (c) - Ethylene promotes fruit ripening. (d) - Auxin promotes rooting in stem cuttings and also functions in xylem differentiation.

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Similar questions

Q. Match and choose the correct option.

	List I		List II
1	Human urine	a	Cytokinin
2	Gibberella fujikuroi	b	Auxin
3	Herring fish DNA	c	Ethylene
4	Ripening fruits	d	Abscisic acid
5	Closing of stomata	e	Gibberellins

Match the following columns
$\begin{matrix} C o l u m n I & C o l u m n I I A . & H u m a n u r i n e & 1. & C y t o k i n i n B . & G i b b e r e l l a f u j i k u r o i & 2. & A u x i n C . & H e r r i n g f i s h D N A & 3. & E t h y l e n e D . & R i p e n i n g o f f r u i t s & 4. & A b s c i s i c a c i d E . & A g e d l e a v e s o f p l a n t s & 5. & G i b b e r e l l i n s \end{matrix}$

Q. Pick up the correct statements.
(A) Cytokinins promote cell division.
(B) Auxins promote growth.
(C) Abscisic acid promotes growth.
(D) Gibberellins inhibit growth.

Q. Match the items in Column I with Column II and choose the correct option.

	List I		List II
A	Human urine	1	Cytokinin
B	Gibberella fujikuroi	2	Auxin
C	Herring fish DNA	3	Ethylene
D	Ripening fruits	4	Abscisic acid
E	Aged leaves of plants	5	Gibberellins

Q. What are the exact functions of the plant hormones(Auxin,Cytokinins,Gibberellins,Abscisic acid)?

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