Which of the following are defining reproductive features of...

Which of the following are defining reproductive features of angiosperms?
a. flowers
b. seeds protected by a seed coat
c. sperm transfer by way of a growing pollen tube
d. development of fruit
e. development of embryo-nourishing tissue within seeds

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Key Concepts

Flowers

Flowers are the specialized reproductive structures of angiosperms that house both the male and female organs required for sexual reproduction. They facilitate pollination—the transfer of pollen to the stigma—which is essential for fertilization and the formation of seeds and fruit.

Pollen Tube

The pollen tube is a critical structure that forms during the process of fertilization in angiosperms. It grows from the pollen grain and transports the sperm cells directly to the ovule, thereby enabling the delivery of genetic material necessary for double fertilization.

Fruit

Fruit is the mature ovary of the flower that develops after fertilization. It serves the important function of protecting the developing seeds and often aids in their dispersal by attracting animals or utilizing other mechanisms to spread the seeds.

Endosperm

Endosperm is the nutrient-rich tissue that forms as a result of double fertilization in angiosperms. It provides essential nourishment to the developing embryo within the seed, supporting its growth until it can sustain itself independently.

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