The Ripening of Fruit and the Dropping of Leaves and Fruit

question 59

Multiple Choice

The ripening of fruit and the dropping of leaves and fruit are principally controlled by

• A) auxins.
• B) cytokinins.
• C) indole acetic acid.
• D) ethylene.
• E) carbon dioxide concentration (in air).

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Definitions:

Graafian Follicle

A mature ovarian follicle that is ready to release an egg during ovulation.

Blood Sugar Concentration

The amount of glucose present in the blood, an important energy source for the body's cells.

Testes

Male reproductive organs that produce sperm and hormones, including testosterone.

Spermatozoa

Male gametes or reproductive cells that carry a man's DNA to the female ovum in sexual reproduction.