Structure and Types of Stems in Angiosperm

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.

 

Note: Multimedia technology in education includes various audio, video, gaming technologies, through which the process of teaching and attesting students’ knowledge is carried out. These include the following information and interactive technologies: A laptop or a personal computer, or rather a wireless and wired information system. Computer technology is the main attribute of an interactive lesson. There is a huge number of means of communicating information and verifying the knowledge of students, the functioning of which is possible thanks to the availability of computers. This and e-mail, designed to send materials to students and maintain communication; and the electronic library is a source of information from electronic books, magazines and other journalistic publications; and the possibility of audio and video conferencing.

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