Question

Which of the following is not water- pollinated plant?

• A. Zostera
• B. Vallisneria
• C. Hydrilla
• D. Cannabis

Answer 1

The correct option is D

Cannabis

The correct option is D

Explanation of the correct option:

1. Cannabis is not pollinated by water instead it is pollinated by wind.
2. Characteristics of wind-pollinated plants are:
   1. Flowers are small and dull in colour
   2. Flowers do not produce nectar and fragrance
   3. Anther produces large quantities of light, dry pollen grains that can be carried by the wind easily
   4. Stigma is large, branched, feathery, and hangs outside the flower to trap the pollen grains easily.

Explanation of the incorrect options:

Option A:

Zostera

1. It is a submerged aquatic plant.
2. Hydrophilous pollination (Pollination by water) occurs in Zostera.

Option B:

Vallisneria

1. Vallisneria, also known as ribbon weed, is a submerged dioecious, aquatic plant. The flowers are also borne under water.
2. Vallisneria is pollinated by water.

Option C:

Hydrilla

1. It is a submerged aquatic plant.
2. Hydrophilous pollination (Pollination by water) occurs in Hydrilla.

Final answer: Cannabis is not water-pollinated.