Question

Vegetative propagation in Pistia occurs by?

• A. Runner
• B. Offset
• C. Sucker
• D. Stolen

Answer 1

The correct option is B

Offset

The correct option is B.

Explanation of the Correct option:

1. Plants can reproduce asexually by vegetative propagation, which takes place in their leaves, roots, and stems.
2. This may happen as a result of the fragmentation and regeneration of particular vegetative plant components.
3. In Pistia, vegetative propagation is accomplished through offset, in which one internode long runner spreads horizontally along the soil surface and produces new plants from axillary or terminal buds.

Explanation of the incorrect options:

Option A:

1. Runners are ground-growing stems that grow horizontally.
2. Buds sprout at the nodes as the runners grow, and these develop into roots and shoots, generating a new plant.
3. Cyanodon, mint, and other similar plants are examples.
4. In Pistia, vegetative propagation is accomplished through offset, in which one internode long runner spreads horizontally along the soil surface and produces new plants from axillary or terminal buds.

Option C:

1. The sucker is used for vegetative propagation in mint.
2. A thin lateral branch emerges from the base of the main axis, grows aerially for a brief time, then bends down and contacts the ground, resulting in the emergence of a new plant.

Option D:

1. A stolon is a stem that grows parallel to the ground.
2. At the nodes, adventitious roots grow, and buds on the runner might develop into erect shoots, forming independent plants.

Final answer: Vegetative propagation is Pistia occurs by offset.