Question

In which plant, root will form a new plant?
A. Populous
B. Dahlia
C. Azadirachta
D. Both A and B

Answer 1

Vegetative propagation is an asexual method of reproduction that occurs in plants. This process is conducted with the support of leaves, roots and stem. This can be done through fragmentation and regeneration of specific vegetative parts of plants.

Complete step by step answer: When the specific part is placed in the soil, the buds present on the tuberous roots grow into leaf shoots. They further develop adventitious roots at their base. The outgrowth is detached and planted to form new plants. Many garden plants like Dahlia, are propagated from roots which have been separated from the parent plant and cut into pieces that are then planted inside the soil.
Populus and Dahlia have apical meristematic tissue at the tip of their roots. Populus has long roots while Dehlia comprises tuberous roots. The meristematic tissue has the capacity to divide actively and form a new plant from that region under favourable conditions.
The option D is the correct answer.

Additional Information: :
In Tissue Culture plant cells from different parts of plants are cultured in the laboratory to develop a new plant. This technique is helpful in increasing the number of rare and endangered plant species that are unable to grow under natural conditions.

Note: Vegetative propagation is a natural process and occurs without human interference. It occurs with the development of adventitious roots. The new plants can emerge from any part of the plant – root, stem or leaves of the parent plant.
The artificial vegetative propagation that occurs in laboratories or by human interference includes-
1. Cutting
2. Grafting
3. Layering