Question

The reproduction through stem roots or leaves is called as-
A. Sexual reproduction
B. Vegetative reproduction
C. Both A and B
D. None of the above

Answer 1

Hint: Reproduction involves the formation of new plants from roots, stems, and leaves. It is a form of asexual reproduction observed in plants, in which only one parent is involved. The offspring formed is identical to the parent. Mitotic cell division is involved in this mode of reproduction.

Complete answer: In plants, the asexual mode of reproduction can occur either naturally or artificially. Some examples that come under this mode of reproduction are budding, spore formation, vegetative propagation, fragmentation. Since the mode of reproduction is asexual, thus it doesn't require any flower for producing offsprings.
Now, let us try to understand the vegetative propagation in brief.
-In this mode of reproduction, new plants are formed from the vegetative parts of the plant itself. These vegetative parts can be roots, buds, stems.
-The stems that grow in a horizontal manner above the ground are termed as runners. They consist of nodes, where bud formation takes place. These buds act as the origin for the formation of new plants.
-The formation of new plants can take place from modified roots. These modified roots are commonly known as tubers. Sweet potato is the most common example under this category.
-In certain plants, new plant formation can take place even from the detached leaves. Bryophyllum comes under this category. In this plant, we can see small plantlets growing from the edge of the leaves.
So, the correct option is B.

Note: Advantages of asexual reproduction- the rate of completion is faster as compared to sexual reproduction; it is time and energy-efficient, as only one parent is involved. The disadvantage of asexual reproduction. Since only one parent is involved, there is no genetic variation in the offspring produced. As a result of this, if one individual is infected, that will ultimately lead to the infection of the entire population.