Question

(c) State one function of each of the following:
(i) Embryo
(ii) Endosperm.
(iii) Cotyledon
(iv) Radicle....
(v) Plumule...​

Answer 1

Answer:

Function of embryo:

1. The embryo produces the new plant .

2. Starch serves a seed for germination.

3. Various layers are protected by the grains.

Functions of endosperm:

1. Stores nutrients and carbohydrates.

2. Sometimes stored reserves are transferred to developing embryo.

3. Sometimes the germinating seedling absorbs the stored reserves directly from endosperm.

Explanation:

Functions of Cotyledon:

1. This is leaf that germinates.

2. It is filled with stored food that the plant ues it before photosynthesis.

3. Some plants have one cotyledon and some have two cotyledons ie. is monocot and dicot.

Functions of radicle:

1.The radicle is the root of the plant.

2. It grows downward into the soil.

3. It is capable of absorbing water from soil.

Functions of Plumule:

1. Plumule is the shoot of the plant.

2. Grows upward into the soil.

3. Capable of performing photosynthesis.

Answer 2

• An epicotyl is important for the beginning stages of a plant's life. It is the region of a seedling stem above the stalks of the seed leaves of an embryo plant. It grows rapidly, showing hypogeal germination, and extends the stem above the soil surface.
• The primary root, or radicle, is the first organ to appear when a seed germinates. It grows downward into the soil, anchoring the seedling. In gymnosperms and dicotyledons (angiosperms with two seed leaves), the radicle becomes a taproot.
• Radical is a region which grows below the ground and gives rise to roots whereas plumule is a part of a seed that grows in above direction from ground. Plumule gives rise to other parts of plants such as stem, leaves and flowers.