Question

Vegetative propagation in Pistia and Water Hyacinth occurs by:

• A. sucker
• B. runner
• C. offset
• D. stolon

Answer 1

The correct option is C

offset

The correct option is C.

Explanation of correct option:

1. In offset, nodes in the lateral branch contain a rosette of leaves and tuft of roots.
2. They allow the plant to remain afloat on the support of the offset.
3. It is present in aquatic plants, e.g. Pistia, Eichhornia, Bryophyllum, etc.

Explanation of incorrect options:

Option A:

A sucker is a sub-aerial modified stem that arises from the base of the stem or the root. Example: Banana.

Option B:

Runner is a sub-aerial form of stem modification and is present in grasses.

Option D:

A stolon is also a runner that runs closer to the ground. Example: strawberry.

Final answer: The vegetative propagation in Pistia and Water Hyacinth occurs by offset.