AP BIOLOGY

Detailed explanation-1: -Most species of conifers and many angiosperms, such as grasses, maples, and oaks, are pollinated by wind. Pine cones are brown and unscented, while the flowers of wind-pollinated angiosperm species are usually green, small, may have small or no petals, and produce large amounts of pollen.

Detailed explanation-2: -Wind Pollination (Anemophily) Many of the world’s most important crop plants are wind-pollinated. These include wheat, rice, corn, rye, barley, and oats.

Detailed explanation-3: -Many of the world’s most important crop plants are wind-pollinated. These include wheat, rice, corn, rye, barley, and oats. Nut producing trees such as walnuts, pecans and pistachios are usually wind-pollinated as well.

Detailed explanation-4: -Pollen grains of wind-pollinated flowers are produced in large quantities to make sure that at least some pollen grains reach the stigmas of other flowers and successful pollination takes place as many pollen grains are wasted. These pollen grains are light and hence are easily transferred to other flowers.

Detailed explanation-5: -In wind-pollinated flowers, the produced pollen grains are smaller and lighter in weight, which can be carried by the wind easily. In insect-pollinated flowers, the produced pollen grains are larger in size, sticky and spiny, which helps the insect to carry the pollen grains.