AP BIOLOGY

Detailed explanation-1: -Most seeds consist of three parts: embryo, endosperm, and seed coat. The embryo is a tiny plant that has a root, a stem, and one or more leaves. The endosperm is the nutritive tissue of the seed, often a combination of starch, oil, and protein.

Detailed explanation-2: -Essentials. The beginning of the growth of a seed into a seedling is known as germination. All seeds need water, oxygen and the right temperature to germinate.

Detailed explanation-3: -The number of cotyledons (seed leaves) distinguishes whether a seed is a monocot or dicot. Monocots have one cotyledon and dicots have two.

Detailed explanation-4: -(a) In every seed, Cotyledons are present. These are produced with the endosperm within the seed. These are plants categorised on the basis of the presence of cotyledons.