Question

mention the functions of the following parts 1.coleoptile 2.celeorrhiza 3.aleurone layer 4.micropyle 5.endosperm 6.plumule
Please tell fast and right answer​

Answer 1

Answer:

(i)Its function is to maintain proper development of the seed. Micropyle - It is a very small opening in the ovule of a seed through which pollen tube manage to enter the ovule depositing the sperm.

(ii)Endosperm - It is the nutritive tissue for the developing embryo.

(iii)Coleoptile and coleorhizae are two important sheaths in monocot plant seeds. They can be seen during the seed germination. Coleoptile is the sheath that protects the emerging shoot while coleorhiza is the sheath which protects the emerging root.

(iv)The periphery of the endosperm of many plant species forms an epidermis-like layer called the aleurone. During germination, the aleurone performs an important digestive function, secreting hydrolases to break down the starch and proteins stored in the starchy endosperm cells.

(v)

Answer 2

Answer:

1. It protects the shoot tip and embryonic leaves.
2. It protects the root tip or radicle.
3. To nourish the embryo enclosed in the seed.
4. It permits water to enter the embryo before active germination.
5. It surrounds the embryo and provides nutrition in the form of starch, though it can also contain oils and protein.
6. It gives rise to other parts of plants such as stem, leaves and flowers.