Question

Find out the correct order of vegetative propagules of plants like Potato, Ginger, Agave, Bryophyllum, and Water Hyacinth.
A. Offset, bulbil, leaf bud, rhizome and eyes
B. Leaf bud, bulbils, offset, rhizome and eyes
C. Eyes, rhizome, bulbil, leaf bud and offset
D. Rhizome, bulbil, leaf bud, eyes and offset
E. Runner, bulbil, leaf bud, rhizome and eyes.

Answer 1

Hint: Asexual method of reproduction in plants that occurs through various parts of the plant is vegetative propagation. Different plants have developed different structures through which they vegetate and these structures are known as vegetative propagules.

Complete answer:
Vegetative propagation occurs by different modifications in the root, stem and leaves of a plant. Vegetative propagation occurs in two ways – Natural and Artificial.
Natural vegetative reproduction occurs through when the plant grows naturally without any human interference. Plants can grow by the propagation of stem, root or leaves. The structures which can grow into a complete plant are known as vegetative propagules like suckers, rhizomes, offsets, tubers, bulbs and runners. These vegetative propagules are modification of the stem, roots or leaves. Stems modified into runners seen in mint, bulbs seen in onion, agave, and rhizomes as in ginger. Roots modify into tubers as in potatoes. Leaves modify into adventitious leaf buds as in Bryophyllum, these buds generate on the axis of leaf and then fall off after some time and germinate into a new plant.
Artificial vegetative reproduction is dependent on human interference and occurs through grafting, layering, cutting and tissue culture.
Option B, Eyes – Potato, rhizome – Ginger, bulbil – Agave, leaf bud – Bryophyllum, offset – Water Hyacinth.

Hence, the correct answer is option (B).

Additional information:
-Vegetative propagation doesn’t include fusion of gametes due to which no change in the genetic material of parent and offspring occurs and that is why the offspring formed is a Clone of its parent.
-Mitotic cell division is observed during vegetative reproduction.
-On the evolutionary front this type of reproduction has negative impact as any defect in the genetic makeup of the plant will keep on passing to the next plant which will be the clone of the parent plant.

Note: Vegetative reproduction is mostly favoured by the gardeners because this type of propagation saves time and money as the plants skip the immature seedling development stage during which the seed germinates and then forma a plant body. Vegetatively propagated plants mature directly.