Wind pollinated flowers are
small, producing a large number of dry pollen grains
The correct option is A.
Explanation of the correct option:
Explanation of the incorrect options:
Option B:
Insect pollinated flowers have small, brightly coloured, producing a large number of pollen grains. Example: Orchid, Sunflower, etc.
Option C:
Insect pollinated flowers have small, producing nectar and dry pollen. Example: Papaya, Buddleja, etc.
Option D:
Bird pollinated flowers have large producing abundant nectar and pollen. Example: Hibiscus, Pea, etc.
Final answer: Wind pollinated flowers are small, producing a large number of dry pollen grains.