Seed : Definition, Parts, Types of seed | study science

 Seed

The ovule after fertilization develops into seeds. A seed is made up of a seed coat and embryo. Seeds are unit of reproduction of a flowering plant. A seed is found inside a fruit which converts into a new plant.

 

 

Parts of seed

 

A seed has 3 parts :-

1. Seed coat
2. Endosperm
3. Embryo 
   

 

1. Seed coat

Seed coat protects the internal parts of seed. The seed coat has 2 layers, testa (thick outer layer) and

tegmen (thin inner layer).

 

Micropyle - An opening in the integument of the ovule is known as micropyle. 

 

2. Endosperm  

It contain nutrients stored in it. Endosperm provides nutrients to the seed during germination. It is located below the seed coat.

 

3. Embryo 

The embryo is most important part of a seed. It is diploid developed from the fertilized egg.

 

 

 

Type of seeds 

 

The two types of seed are :-

1. Monocotyledonous seed

2. Dicotyledonous seed