what are seeds ? what do they contain what is their function
Answers
Answer:
Seed: A seed is a small embryonic plant enclosed in a covering called the seed coat, usually with some stored food.
Functions of Seeds:
The seeds perform the following functions:
- They help in germination of the new plant.
- The seeds contain food reservoirs in the form of cotyledons and endosperm.
- The seed coat is protective in nature which protects the embryo inside.
Explanation:
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Answer:
Explanation:
Seeds of different plants may vary in many ways, but the basic anatomy remains the same. A typical seed consists of the following parts:
Tesla: It is the outer coat of the seed that protects the embryonic plant.
Micropyle: It is a tiny pore in the testa that lies on the opposite of the tip of the radicle. It permits water to enter the embryo before active germination.
Hilum: Is a scar left by the stalk which attached the ovule to the ovary wall before it became a seed.
Cotyledon: In some plants, this contains high quantities of starch and will provide a source of food for the developing embryo prior to germination, in other plants this role is performed by an endosperm. In monocotyledons, there is just one cotyledon whereas in dicotyledons there are two. Depending on the type of germination (epigeous or hypogeous) the cotyledons may remain below ground or be pulled above ground.
Radicle: This is the embryonic root which will develop into the primary root of the plant. It is usually the first part of the embryo to push its way out of the seed during germination.
Plumule: This is the embryonic shoot. It appears as a bud which will give rise to the shoot and the remaining structures in the plant.
The seeds perform the following functions:
They help in germination of the new plant.
The seeds contain food reservoirs in the form of cotyledons and endosperm.
The seed coat is protective in nature which protects the embryo inside.