Structure and Types of Stems in Angiosperm

 

Structure:

 

The part of a flower from where a leaf arises is called node. The distance between two nodes is called internode.

 

Types:-

 

There are following types of stems:

 

(i) Underground stem:

 

Most stems grow above the ground, but some grows underground. These stems store food in them e.g. ginger, potato and arvi etc.

 

(ii) Weak stem:

 

Some stems are very weak and could not grow erect. They spread on the ground e.g. melons, morning glory and money plants.

 

(iii) Succulent stems:

 

Opuntia, Euphorbia and cactus have succulent stems that can store and conserve water.

 

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