Question

Match the growth regulators with the processes and choose the correct combination from the options.

	List I		List II
a	Auxin	1	Colouring test in lemon
b	Gibberellin	2	Cell division test in plants
c	Cytokinin	3	Avena curvature test
d	Ethylene	4	Dwarf corn test

• A. a- 1, b- 4, c- 2, d- 3
• B. a- 4, b- 3, c- 1, d- 2
• C. a- 2, b- 1, c- 4, d- 3
• D. a- 1, b- 3, c- 4, d- 2
• E. a- 3, b- 4, c- 2, d- 1

Answer 1

The correct option is E a- 3, b- 4, c- 2, d- 1

A. Bioassay of Auxin is Avena curvature test which is based on the curvature of coleoptiles of Avena under the effect of Auxin.

B. Bioassay of Gibberellin is dwarf corn test which is based on the property of Gibberellin to increase the length of internodes of dwarf stems of corn plant.

C. Cytokinin can be assessed by cell division test in plants. Cytokinin can promote cell division and form tissues and organs by differentiation of meristematic cells.

D. Colouring test of lemon is based on the property of ethylene in inducing ripening. Ethylene is a fruit ripening hormone. The colour of lemon changes under the effect of ethylene.

Hence, the correct match is a- 3, b- 4, c- 2, d- 1

So, the correct answer is 'a- 3, b- 4, c- 2, d- 1'.