AP BIOLOGY

Detailed explanation-1: -Cotyledons help supply the nutrition a plant embryo needs to germinate and become established as a photosynthetic organism and may themselves be a source of nutritional reserves or may aid the embryo in metabolizing nutrition stored elsewhere in the seed.

Detailed explanation-2: -Source of food in a seedling (before true leaves are formed) Beneath the seed coat lies the seed leaves where it stores food. Food in the seed leaves is used in the process of respiration to release energy for the growth of the seedling.

Detailed explanation-3: -endosperm, tissue that surrounds and nourishes the embryo in the seeds of angiosperms (flowering plants). In some seeds the endosperm is completely absorbed at maturity (e.g., pea and bean), and the fleshy food-storing cotyledons nourish the embryo as it germinates.

Detailed explanation-4: -The embryo’s food, called endosperm, may be in the seed leaves (also called cotyledons) or it may be outside the seed leaves and be absorbed as the seed germinates. Endosperm food sources can be in the form of carbohydrates, proteins, or fats.

Detailed explanation-5: -Cotyledons are the food for the baby plant until it can make its own food from light and are often the first embryonic leaves of the plant.