AP BIOLOGY

Detailed explanation-1: -Wind-pollinated plants produce large numbers of light, dry pollen that are easier to carry by the wind. Stigma is the topmost surface of the pistil that receives pollen grains. Wind-pollinated flowers have a large, feathery stigma in order to trap the airborne pollen grains.

Detailed explanation-2: -The pollen grains are very small and light so they are easily carried on the wind. A lot of pollen is produced, which increases the chances of a pollen grain reaching the stigma in another flower. The stigmas are long and feathery, which gives a large surface area for catching pollen.

Detailed explanation-3: -Insect pollinated flowers have bright-colored petals, and they have a pleasant smell. The pollen grains are lighter in weight so that they can be carried out easily. The pollen grains are larger and are sticky so that the insects can carry them with ease. These flowers have a feathery stigma with petals hanging out.

Detailed explanation-4: -Solution: Pollination: Pollination is the process of transfer of pollen grains from anther to stigma. The two types of pollination found in flowering plants are: Self pollination: that occurs within the same plant.

Detailed explanation-5: -Pollen grains are produced in large quantity to make sure atleast some of them reach the stigma of another flower. Sticky and feathery stigma is present. Examples: Wheat, rice, corn.