EVERYDAY SCIENCE

SCIENCE

BOTANY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The outer layer of all seeds is called the
A
Fruit
B
Skin
C
Endotesta
D
Exotesta
Explanation: 

Detailed explanation-1: -The endotesta is derived from the inner epidermis of the outer integument, and the outer layer of the testa from the outer surface of the outer integument is referred to as the exotesta.

Detailed explanation-2: -The outer covering of a seed is called the seed coat. Seed coats help protect the embryo from injury and also from drying out. Seed coats can be thin and soft as in beans or thick and hard as in locust or coconut seeds.

Detailed explanation-3: -A seed coat protects the internal parts of a seed. The seed coat has two layers. The outer layer is thick and known as the testa.

Detailed explanation-4: -A seed is formed when the ovule develops a touch coat after fertilization. A seed contains the embryo and the food materials to nourish it. The tough seed coat comprises two layers, testa and tegmen. Testa is the outer hard protecting cover of the seed.

Detailed explanation-5: -Seed coat is the outer covering of the seed which protects the internal parts of the seed.

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