Question

You have learned that the fusion of egg and sperm produces a zygote. But how does the sperm reach the egg, and how does the zygote develop into a seed, which eventually germinates and grows into a mature sporophyte? In this activity, you will demonstrate your understanding of double fertilization and seed development in angiosperms.

Drag the statements to their appropriate locations on the flowchart of pollination, fertilization, and seed development.
a. pollen tube grows down the style
b. generative, cell divides, forming 2 sperm
c. 2 sperm are discharged into the female gametophyte
d. sperm fuse with the egg & 2 polar nuclei
e. zygote forms & divides into a terminal cell & a basal cell
f. cells of the embryo differentiate into three tissue types

Answer 1

Pollination: a. pollen tubes grow down the style.

Fertilization: c. 2 sperm are discharged into the female gametophyte.

d. sperm fuse with the egg & 2 polar nuclei

Seed development: b. generative, cell divides, forming 2 sperm.

e. zygote forms & divides into a terminal cell & a basal cell

f. cells of the embryo differentiate into three tissue types

Step-by-step explanation:

Fertilization is the fusion of one or more sperm with an egg or the female gametophyte in the case of vegetables as option C and D describes.

Pollination is the process that flower plants use to reproduce with the help of insects that transport pollen from one flower to other depositing it in the pollen tubes that grow down the style in order to connect with the ovary of the flower as option A describes.

As regards seed development once that the fertilization is finished the seed starts to grow as option E and F describes. Option B describes the development of sperms, this process occurs before fertilization and through mitosis and meiosis.