AP BIOLOGY

Detailed explanation-1: -Complete answer: Petals are usually brightly coloured because they attract insects. Flowers produce the sweet smell and bright coloured petals, which increases the chances of pollination. Pollination is a very important step in the sexual reproduction of higher plants.

Detailed explanation-2: -The flowers use coordinated signals of color and fragrance to attract insects, which acquire pollen during floral visits and ensure pollination of the plants. In turn, the insects benefit by acquiring nectar and pollen as food.

Detailed explanation-3: -Pollination is an essential part of plant reproduction. Pollen from a flower’s anthers (the male part of the plant) rubs or drops onto a pollinator. The pollinator then take this pollen to another flower, where the pollen sticks to the stigma (the female part). The fertilized flower later yields fruit and seeds.

Detailed explanation-4: -Petals are the most colourful and attractive part of a flower. Their main function is to attract insect pollinators like bees, butterflies, wasps, etc. These natural pollinators are capable of transferring the pollen grains from one flower to anotehr, mostly resulting in cross pollination.

Detailed explanation-5: -Brightly coloured, fragrant flowers attract insects and nectar acts as rewards for them. Insects like bees, take nectar from the plants and help in dispersal of pollen from one flower to the other.