Question

Match the names of the phytohormones with the roles listed.

	List I		List II
A	Auxin	p	Internodal elongation
B	Gibberellin	q	Cell division
C	Cytokinin	r	Ripening of fruits
D	Ethylene	s	Abscission
		t	Apical dominance

• A. A- t, B- p, C- s, D- q
• B. A- t, B- p, C- q, D- s
• C. A- t, B- p, C- q, D- r
• D. A- t, B- s, C- p, D- q

Answer 1

The correct option is C A- t, B- p, C- q, D- r

Plants have five major hormones namely, auxin, gibberellin, cytokinin, ethylene and abscisic acid. Function of these plant hormones are as follow:

• Auxin: It helps the plant grow longer at the regions where apical meristems are present (usually present at the root and shoot tips) and hence serves in apical dominance.
• Gibberellin: It helps in growth of the stem of a plant.
• Cytokinin: Cytokinins promote cell division and is thus found in higher concentration in areas of rapid cell division.
• Ethylene: This gaseous hormone helps in seed germination and fruit ripening.
• Abscisic acid: It has a negative effect on plant growth and helps in inhibiting plant growth.

So, the correctly matched combination is given in option C, which is the correct answer.