Process of fertilisation Flashcards
(7 cards)
1
Q
after pollination…
1
A
pollen grain germinates after it is transferred to a suitable stigma - response to sugary fluid secreted by mature stigma
2
Q
each pollen grain…
2
A
each pollen grain grows a pollen tube with the male gamete in the tube
3
Q
the pollen tube secretes…
3
A
the pollen tube secretes enzymes to digest its way through the stigma, style and ovary wall
4
Q
pollen ____ enters the ____….
4
A
the pollen tube enters the ovule through the micropyle
5
Q
within the ovule…
5
A
pollen tubes burst and release the male gametes into the ovule
6
Q
fertilisation occurs when…
6
A
fertilisation occurs when the male gamete’s nucleus fuses with the ovum’s nucleusm, a zygote formed
7
Q
after fertilisation
7
A
ovary becomes a fruit, ovule becomes a seed
