Q.Which of the following characteristics can distinguish wind-pollinated flowers from insect-pollinated flowers ?

Pollination is achieved either abiotically (wind, water) or biotically (insects, birds, bats, and occasionally other animals), and flowers show clear adaptations to their agent. Wind-pollinated (anemophilous) flowers, such as grasses and maize, are usually small, inconspicuous, produce enormous quantities of light, non-sticky pollen, have well-exposed versatile anthers and large, feathery stigmas to trap airborne pollen. Water-pollinated (hydrophilous) flowers are few (e.g. Vallisneria, Zostera); pollen may be released to float on the water surface or be released underwater in long ribbon-like ropes, often protected by a mucilaginous covering. Animal-pollinated flowers are generally large, colourful, fragrant, and offer nectar or pollen as a reward; bat-pollinated flowers (e.g. Kigelia, Adansonia) open at …