PHYTO HARMONES Quiz

Which plant hormone is mainly responsible for cell elongation and differentiation of shoots and roots?

• Cytokinins

• Auxins

• Ethylene

• Gibberellins

What is a primary function of cytokinins in plants?

• Closing of stomata

• Germination of seeds

• Promotion of cell division

• Ripening of fruit

Gibberellins are known to stimulate which of the following processes?

• Seed dormancy

• Opening of stomata

• Elongation of stems

• Promoting ageing of leaves

Which hormone is involved in seed dormancy and closing of stomata?

• Gibberellins

• Auxins

• Ethylene

• Abscisic acid

What is the main role of ethylene in plants?

• Cell division

• Ripening of fruit

• Promotion of sprouting of buds

• Development of seedless fruits

Which hormone promotes the ageing of leaves in plants?

• Auxins

• Cytokinins

• Abscisic acid

• Ethylene

Promotion of the sprouting of lateral buds is a function of which hormone?

• Cytokinins

• Ethylene

• Abscisic acid

• Gibberellins

Development of seedless fruits and stimulation of flowering are mainly controlled by:

• Auxins

• Gibberellins

• Ethylene

• Cytokinins

Which hormone delays the ageing in leaves and promotes opening of stomata?

• Cytokinins

• Gibberellins

• Ethylene

• Abscisic acid

Breaking the dormancy in seeds and buds is attributed to:

• Auxins

• Abscisic acid

• Gibberellins

• Ethylene