Understanding Plant Hormones

The video introduces plant hormones and their functions. It covers key vocabulary such as senescence, abscission, and germination. The video then explains the roles of different hormones: Auxin in stem lengthening and fruit development, Cytokinin in cell division and germination, Gibberellin in growth and pollen development, Abscisic Acid in dormancy and senescence, and Ethylene in fruit ripening and leaf abscission.

What does the term 'senescence' refer to in plants?

• The process of seed germination

• The elongation of stems

• The aging of the plant

• The development of fruit

Which hormone is known to stimulate stem elongation and regulate fruit development?

• Cytokinin

• Gibberellin

• Auxin

• Ethylene

What is a primary function of Cytokinin in plants?

• Encouraging seed dormancy

• Stimulating fruit ripening

• Promoting leaf abscission

• Controlling cell division in roots and shoots

Which hormone is responsible for stopping growth and promoting seed dormancy?

• Auxin

• Abscisic Acid

• Gibberellin

• Cytokinin

Ethylene is a plant hormone that primarily encourages what?

• Cell division in roots

• Fruit ripening and leaf abscission

• Seed germination

• Stem elongation