Question

Write the functions of stem and, Write about stem modification..

I need a very long answer..

Answer 1

Answer:-

$@BrainlyBlooms$

Functions of a stem:-

The following are the functions of stem:-

• It holds the leaves in position and helps them to spread out as the stem and its branches grow. This ensures that they get enough light for photosynthesis.

• It bears flowers, buds, leaves and fruits.

• It conducts water and minerals from the roots to the leaves. Similarly, it carries the food manufactured by the leaves to the other parts of the plant.

• A green stem has chlorophyll and can carry out photosynthesis.

Stem Modifications:-

Stems of certain plants are modified to perform special functions.

Some of the modifications and functions are given below:-

• For storage of water:- Stems of plants such as cactus and jade plant swell up to store water in them.

• To manufacture food:- Stems of some plants become flattened and leaf-like that of a cactus and perform photosynthesis.

• For protection:- Stems can be modified as thorns, such as bougainvillea or may be in the form of hard and sharp prickles as in rose, to protect the plant from being eaten by animals.

• For support:- Stems of climbers such as grapes and passion flower are modified to form special structures called tendrils. These help the climber plants, which have weak stems , attach themselves to others for support.

• For storage of food:- Potato, onion, and ginger are modified stems that store food. There are three types of common kinds of underground stems:- tubers ( eg:- Potato), rhizomes (eg:- ginger), and bulbs (eg:- onion).

• For multiplication of the plant:- Rhizomes, bulbs, tubers also help in the multiplication of the plant. Plants such as rose jasmine and hibiscus grow into new plants through stem cutting.

Answer✅

 

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Answer 2

Answer:

Explanation:

Stem:

It helps to transfer the nutrients from root to other parts of the plant..

It also supports the plant to grow up straight..

Stem modification:

In some plants the stems are modified to perform the function of storage of food, support, protection and vegetative propagation.