Question

Differentiate between the mechanisms of pollination in vallisneria and sun flower

Answer 1

Ans: In Vallisneria pollination is through hdrophilly ie through water. In Valilisneria, the female flower appear on the surface of the water as it have a long stalk. The pollen grains released by the male flower reaches to female flower for fertilisation through water currents.

In sea grass, the female flowers are seen submerged in water and the pollen grains are released inside the water. The pollen grains reach stigma for pollination.

The moth and Yucca plant is mutually benefited by their association. The moth lay eggs in the ovary of yucca flower which helps the plant in pollination. When the egg hatches, the larva feed the fruits and seeds of the plant. Thus the plant provide food and shelter to the moth and moth helps the plant to pollinate.

Answer 2

vallisneria is water pollinated flower
In Valilisneria, the female flower appear on the surface of the water as it have a long stalk. The pollen grains released by the male flower reaches to female flower for fertilisation through water currents.

and sunflower is an insect pollinated flower

The yellowpollen is transferred from the insect's hairy legs to the stigma.