In the absence of light, growth is decreased in certain plants. This phenomenon is called:

Cucumber is an example of:

The paratonic movement of locomotion in response to chemical stimulus is called:

Zinc is essential for the biosynthesis of:

The increase in girth or thickness of the plants is by a type of growth called:

Gibberellic acid has been successfully employed to induce flowering in:

Seedless fruits can be obtained with the help of which hormone?

The condition of a seed when it fails to germinate, even though the environmental conditions are favourable is called:

Senescence occurring due to the competition for metabolites between young and older leaves is called:

The term vernalization was first used by?