Fertilization Steps

Question 1

1. Pollen grain lands in stigma:

When pollen grain lands, stigma secretes _ solution

Answer 1

Sucrose

Question 2

1. Pollen grain lands in stigma:

Sucrose prompts pollen to grow a _

Answer 2

Pollen tube

Question 3

1. Pollen grain lands in stigma:

Tip of pollen tube secretes digestive enzymes, allowing it to _

Answer 3

Grow down the style

Question 4

1. Pollen grain lands in stigma:

On reaching the ovary, pollen tube enters _

Answer 4

An ovule

Question 5

2. Fertilization of ovary:

_ from pollen grain travel down tube into the ovule

Answer 5

Two sperm

Question 6

2. Fertilization of ovary:

One fuse with egg cell to form zygote, which grows into embryo, other fuse with _

Answer 6

Two other female nuclei

(Endosperm)

Question 7

Micropyle is an opening at bottom of _ at bottom of style

Answer 7

Ovary

Question 8

3. Fruit grows:

Ovule becomes seed and ovary becomes _

Answer 8

Fruit

Question 9

3. Fruit grows:

_ become the pericarb

Answer 9

Ovary wall

Question 10

3. Fruit grows:

Flower petals shed, fruit grows, accumulates sugar as _

Answer 10

Seed matures