Question

23. What would be expected to happen if,
i) Gibberellic acid is applied to sugarcane?
ii) Ethephon is applied to Cucumber plants?​

Answer 1

Answer:1) Internodal elongation

2) Withering of leaves

Answer 2

1) Gibberellic acid helps in elongating the shoot of the sugar cane thus increasing the yields.

2) Ethephone promotes female flowers in cucumber thus increasing the yield

• Gibberellin and the phone are both plant hormones.
• Gibberellic acid is a plant growth regulator.
• The most important function is stem elongation.
• When gibberellin is applied even in low concentration to the bush, the stem elongates very much.
• We know in sugarcane stem is the most useful part, if Gibberellic acid is used yield can be increased in sugarcane.
• Ethephone has a feminizing effect.
• The cucumber plant can have both female and male plants.
• But when ethephone is applied, the number of female flowers increases.
• Only female flowers will turn into fruits.
• Ethephone thus increases yield in cucumber plant.