AP BIOLOGY

Detailed explanation-1: -Stigma. Sticky surface where the pollen lands and germinates.

Detailed explanation-2: -Insect-pollinated flowers usually possess sticky and heavy pollens with a rough surface that allow them to stick to insects easily. Flowers also have sweet nectar that attracts insects that go from flower to flower to pollinate the flowers.

Detailed explanation-3: -In insect-pollinated flowers, the produced pollen grains are larger in size, sticky and spiny, which helps the insect to carry the pollen grains. Stigma is feathery or sticky and found hanging out of petals. Stigma is small and is situated deep inside the petals. The stamens are long and visible out of the petals.

Detailed explanation-4: -The stigma is a female part of the flower. It is sticky so it can catch grains of pollen easily. A female part of the flower. Pollen travels down the style to the ovary.