Question

Match the column

Column 1	Column 2
Cytokinin	Leaf tendrils grow round the surface
Chemotropism	Fruit ripening
Auxin	Cell division
Thigmotropism	Apical dominance
Ethylene	Sugar on the stigma

Answer 1

A.Cytokinin [III] Cell division

• Cytokinin regulates positively cell division.
• By stimulating cell division,they regulate shoot meristem size,leaf primodia number,leaf and shoot growth.

B.Chemotropism [V] Sugar on the stigma

• Growth of a pollen tube towards ovule is induced by a chemical[sugar]substance secreted by ripened stigma of flower into the style towards ovary.

C.Auxin [IV] Apical dominance

• Apical dominance is the function of Auxin
• In apical dominance an apical bud grows taller as compared to the other lateral branches.

D.Thigmotropism [I] Leaf tendrils grow round the surface

• Thigmotropism is a directional growth movement which occurs in response to touch stimulus.
• It is typically found in twining plants and tendrils.

E.Ethylene [II] Ripening fruits

• Ethylene plays a major role in ripening of fruits like banana.

A.	Cytokinin	III	Cell division
B.	Chemotropism	V	Sugar on stigma
C.	Auxin	IV	Apical dominance
D.	Thigmotropism	I	Leaf tendrils grow round the surface
E.	Ethylene	II	Ripening fruits