Question

A characteristic of wind pollinated flower is
A. feathery exserted stigma,
B. feathery inserted stigma,
C. narrow exserted stigma,
D. narrow inserted stigma.

Answer 1

Pollination by wind is called anemophily, and flower must possess female part large size feathery stigma and protruding above the other floral part for successful pollination, if such feature is not possess by flower it will not lead to pollination and fertilization.

Complete answer:
Wind pollination flowers may be small in size and do not possess any odor, nectar, or petals to confirm the pollination female part may be naked or large in size. The stigma is large feathery protruding outside to catch the pollen grains and confirm the pollination. Anther will produce in large numbers. Most of the coniferous and 12% of the world flowering plants are wind pollinated.
B. feathery inserted stigma: it does not possess wind pollinated character because of feathery stigma is present inside the floral part which may not allow the wind pollination. It requires another kind of vector or medium to pollinate the characteristics of the flower.
C. Narrow exserted stigma: In this type, the features of flowers may not allow the wind pollination instead it requires other medium like water or other things like birds or bats which confirms the pollination of such flowers.
D. Narrow inserted stigma: In this type of feature the flowers need insects which can go inside the flower and confirm the pollination, because stigma is present as inserted in flowers and it cannot be pollinated by the wind.

Note:
Wind pollinated flowers must show such kind features like large protruding stigma, feathery sticky stigma without petal, odor and nectar to confirm the pollination and anther produce light and large numbers of pollen grains which can travel long distances with wind.