fertilisation

Question 1

step 1

Answer 1

IF the pollen grain lands on the stigma of the flower of the SAME species, it begins to grow a tube

Question 2

step 2

Answer 2

the pollen grains secretes an enzyme that digests a path towards the ovary

Question 3

step 3

Answer 3

the ovule is surrounded by protective layers called integuments. micropyle is a small hole on one side of the ovule where the pollen tube enters

Question 4

what are integuments

Answer 4

protective layers that surround the ovule

Question 5

what is the micropyle?

Answer 5

a small hole on one side of the ovule where the pollen tube enters

Question 6

step 4

Answer 6

the pollen nucleus (male gamete) travels down the tube and fuses with the female gamete

this is called fertilisation

Question 7

what do you need to fertilise many ovules?

Answer 7

many pollen grains

Question 8

what happens to the other parts of the flower after the ovule has been fertilised?

Answer 8

the petals, sepals, and stamens fall off

fertilised ovules grow and divide by mitosis

ovule is now a seed!

Question 9

what happens to the ovary after fertilisation?

Answer 9

develops into a fruit