AP BIOLOGY

Detailed explanation-1: -In both gymnosperms and angiosperms, the young plant contained in the seed, begins as a developing egg-cell formed after fertilization (sometimes without fertilization in a process called apomixis) and becomes a plant embryo. This embryonic condition also occurs in the buds that form on stems.

Detailed explanation-2: -A seedling is a young plant or sporophyte developing out of a plant embryo from a seed. Seedling development starts with germination of the seed. A typical young seedling consists of three main parts: the radicle (embryonic root), the hypocotyl (embryonic shoot), and the cotyledons (seed leaves).

Detailed explanation-3: -In the following morning, the fertilized egg begins cell division to develop into an embryo. An embryo is a baby of the plant, which is kept dormant in the seed until the right condition for germination comes.

Detailed explanation-4: -In most broad-leafed plants, there are two seed leaves (called cotyledons) which are usually different in shape from the true leaves of the plant. The hypocotyl is the portion of the embryo which becomes the stem.

Detailed explanation-5: -Embryo-the beginning of the new plant. Endosperm-Stored food in a monocotyledon. Stored Food-a plant uses stored food until it grows leaves that can make food. Monocot-a type of seed that has only one cotyledon.