Question

Natural vegetative propagation takes place in sweet potato by
A. Root
B. Stem
C. Leaf
D. Pollen

Answer 1

Hint:
The vegetative propagation is one of the methods of reproduction which includes the involvement of the parts and tissues other than reproductive organs. It is considered to be a kind of asexual reproduction. The vegetative propagation in sweet potato is in the edible part.

Complete answer:
In sweet potato, natural propagation takes place by roots that are the edible part of sweet potato.
The root is modified for the storage of food produced by the plant.
It is swollen and irregularly shaped due to food storage. This structure of root arises from the nodes of the stem and develops adventitious buds.
These buds develop on the roots which stored the food supply and fall off to the ground upon maturation.
The cultivators of sweet potato often use stem cuttings for propagation and true seeds for breeding, considering the roots are the crop for which they cultivate.
Some other examples of propagation are :
Root – Carrot, Dahlia, etc.
Stem – Potato tubers, Turmeric, etc.
Leaf – Bryophyllum, Begonia, etc.
Pollen – Almost all angiosperm plants with unisexual or bisexual flowers.
Apart from these, many specialized structures are found in plants for vegetative propagation. Bulbs, rhizomes, stolen, tubers, etc. are some of the examples.

The correct answer is option (A) Root.

Note: The sweet potato is not closely related to potato. Potato belongs to the family Solanaceae and sweet potato belongs to the family Convolvulaceae. Also, the edible part of sweet potato is the adventitious root while the edible part of potato is the stem tuber. Both of these are the modification of root and stem respectively.