AP BIOLOGY

Detailed explanation-1: -The top of the pistil is called the stigma, which is a sticky surface receptive to pollen. The bottom of the pistil contains the ovary and the narrowed region in between is called the style. The male contribution or pollen is produced in the anther, and seeds develop in the ovary.

Detailed explanation-2: -The pistil usually is located in the center of the flower and is made up of three parts: the stigma, style, and ovary. The stigma is the sticky knob at the top of the pistil.

Detailed explanation-3: -Stigma: The part of the pistil where pollen germinates. Ovary: The enlarged basal portion of the pistil where ovules are produced.

Detailed explanation-4: -Stigma is the top swollen part of the pistil in the female reproductive part of a flower. Pollen grains from the anther of stamen part of the flower are released and land on the stigma of the flower. Stigma is sticky so that the pollen grain can attach to it.

Detailed explanation-5: -The stigma is made up of stigmatic papillae, which have pollen-receptive cells and form the distal section of the style or stylodia. These can be limited to the style’s apex or can cover a large area, especially in wind-pollinated species.