Question

which one of the following features is an indication for modification of stem of a plant?

Answer 1

Hi mate

Thanks for asking this question.

Here is your answer.



$the \: stem$

The stem is the ascending part of

the axis bearing branches, leaves, flowers and

fruits. It develops from the plumule of the

embryo of a germinating seed.


The stem bears nodes and internodes.
Nodes

is the region where the leaves are born while


the portion between two nodes is known as

internodes.


The main function of the stem is spreading

out branches bearing leaves, flowers and

fruits.


It conducts water, minerals and

photosynthates.




$modification \: of \: stem$



$(1) \: storage \: of \: food$



Underground stem of potato, ginger,

turmeric, zaminkand are modified to store food

in them.

They also act as a organs of perinnation to

tide over the condition unfavorable.




$(2) \: stem \: tendrils \:$



Stem tendrils which developes from the

axillary buds, which helps plants to climb.


As in gourds ( cucumber, pumpkin,

watermelon ) and grapevines.



$(3) \: thorns \:$


Axillary buds of the stem may also

get modified into woody, straight and pointed

thorns.


Thorns are found in many plants such as

citrus, bougainvillea.


They protect plants from browsing animals.



$(4) \: phylloclade$


Some plants of aids regions

modify their stem into flattened (opuntia) ,

fleshy cylindrical (Euphorbia) structures.


They contain chlorophyll and carry out the

process of photosynthesis.





Thank you.



BE BRAINLY !!!!!!!!!!!!!

Answer 2

Aerial stem modifications are modifications to the aerial stems, vegetative buds and floral buds of plants growing in different conditions and which perform functions such as climbing, protection, synthesis of food, or vegetative propagation.