Plant Growth an...

A young dicot seedling (e.g, soybeans) is laid horizontally on a surface and is subjected to gravity stimulus. The shoot bends in an upward direction and the root bends in a downward direction. Which out of the following is the possible reason for this movement?

Ethylene is used for _________________.

The hormone 'X' does the following functions.
(i) Induces seed dormancy.
(ii) Inhibits seed germination.
(iii) Prepares plants to cope with stress.
(iv) Stimulates closure of stomata.
The hormone 'X' should be

A farmer grows cucumber plants in his field. He wants to increase the number of female flowers in them. Which plant growth regulator can be applied to achieve this?

Gibberellins promote the formation of  A  flowers on genetically  B  plants in Cannabis whereas ethylene promotes formation of  C  flowers on genetically  D  Cannabis plants.

Hormone responsible for ageing is ____________.

Bud dormancy is induced by ________.

Read the given statements to identify the phytohormone that performs these functions.

Vernalisation can often be replaced by ______________.

Gibberellic acid induces flowering