Fertilisation in plants

Question 1

how does fertilisation in plants happen?

Answer 1

When nucleus of pollen ( with male DNA) joins the nucleus of the egg/ovule ( with female DNA)

Question 2

Name of plants that produce and bear their seeds in fruits

Answer 2

Angiosperms

Question 3

What is sporogenesis?

Answer 3

Produces haploid megaspores and microspores from mother cells

Question 4

What is gametogenesis?

Answer 4

Production of gametes from these spores

Question 5

On what 2 conditions will the pollen grain germinate?

Answer 5

-If pollen grain and stigma it attaches to is of same species
-But not the same plant to prevent self-fertilisation

Question 6

What happens after pollen lands on stigma?

Answer 6

Pollen tube begins to grow

Question 7

What occurs while generative cell travels down the tube?

Answer 7

Divides simultaneously by mitosis, 2 male nuclei formed.

Question 8

Why is growth of pollen tube rapid?

Answer 8

Because of fast elongation of cell

Question 9

Once tube has entered micropyle what happens?

Answer 9

Double fertilisation:
-One male nucleus fuses with nuclei of 2 the polar bodies to form triploid nucleus
-The other one fuses with egg cell to form diploid zygote

Question 10

What is micropyle?

Answer 10

Small opening of the ovule in plants