NEET Biology — Sexual Reproduction in Flowering Plants

Large, bright petals

Reduced or absent petals and stamens

Sticky surfaces to capture pollen

Fragrant nectar production

Pollen dehiscence is often synchronized with the period of stigma receptivity to maximize successful fertilization.

Pollen dehiscence occurs at random times, regardless of stigma receptivity.

Pollen dehiscence is independent of environmental cues such as humidity and temperature.

Pollen dehiscence always occurs only at night.

Antipodal cells fuse with sperm cells to form the zygote.

Antipodal cells contribute to nutrient absorption in the embryo sac and typically degenerate later.

Antipodal cells develop into the endosperm.

Antipodal cells form the seed coat.

Fruit development after normal fertilization

Fruit development without fertilization, resulting in seedless fruits

Formation of multiple fruits from one flower

Abnormal seed development within the fruit

Nectar is produced to attract pollinators.

Nectar contains sugars and amino acids.

All flowers produce nectar regardless of their pollination mechanism.

Nectar rewards help facilitate cross-pollination.