Edexcel IAL Plant Hormones Quiz

Which plant hormone is involved in the promotion of fruit ripening?

• Gibberellin

• Auxin

• Ethylene

• Cytokinin

What is the term for the movement of plant shoots toward light?

• Gravitropism

• Phototropism

• Thigmotropism

• Chemotropism

Which plant hormone is responsible for promoting cell division and differentiation in tissue culture?

• Auxin

• Gibberellin

• Cytokinin

• Ethylene

What is the role of abscisic acid in plant responses to water stress?

• Promotes stomatal opening

• Inhibits stomatal opening

• Stimulates shoot growth

• Inhibits root growth

Which plant hormone is responsible for inducing dormancy in seeds and buds?

• Gibberellin

• Auxin

• Ethylene

• Abscisic acid

Which plant hormone is responsible for promoting leaf abscission in deciduous trees?

• Gibberellin

• Ethylene

• Cytokinin

• Abscisic acid

What is the role of cytokinins in plant growth?

• Promote cell division and shoot growth

• Inhibit cell division and root growth

• Promote leaf abscission

• Inhibit fruit ripening

Which plant hormone promotes cell elongation and stem growth?

• Gibberellin

• Auxin

• Cytokinin

• Abscisic acid

What is the primary function of plant hormones?

• Regulation of body temperature

• Coordination of growth and development

• Production of ATP

• Photosynthesis

Which plant hormone is involved in the opening and closing of stomata?

• Auxin

• Gibberellin

• Ethylene

• Abscisic acid