Biology F5 C6
Pollen mother cell-----> Microspore is____process.
meiosis
Microspore---->pollen grains is___process.
mitosis
Meiosis
-Produce___daughter cells (microspores)
-Have___division stages (meiosis I & meiosis II)
-Genetic composition in microspores nucleus is different with microspore___cells.
-Number of chromosome in microspore___from microspore mother cells.
4, 2, mother, half
Mitosis :
-Produce__daughter cells (nucleus)
-Have___division stage
-Genetic composition in pollen nuclues is___with microspore nucleus
-Number of chromosome in each pollen nuclues is___with the number of chromosome in microspore nuclues.
2, 1, identical, same
Why are stamen and carpel are located on the same flower ?
-Is a___flower
-Male and female reproductive organs at the same flower
-known as____organism
bisexual, hermaphrodytes
Similarities of ovary and anther.
-Both undergo___& mitosis
-Both produces___gamete
meiosis, haploid
Formation of gamete in ovary :
-Formation of___sac
-Occurs in nucellus tissue in___
-Involved___mother cell
-Produce___megaspore cells
-___megaspore cells degenerate and 1 cell is developed
-Megaspore nucleus cell undergp mitosis___times
-___nuclei produce
-3___cells and 2___cells degenerate
-1 egg cell and 2___nuclei involve in double fertilisation
embryo, ovule, megaspore, 4, 3, 3, 8, antipodal, synergid, polar
Formation of gamete in anther :
-Formation of pollen____
-Occurs in pollen___
-Involved microspore___cells
-Produce__microspore cells (tetrad)
-Each tetrad develops into pollen grain
-__nuclei produce
-Tube nucleus___
-____nucleus undergo mitosis to form__male gametes that involve in double fertilisation
grains, sac, mother, 4, 2, degenerates, generative, 2
Carpel undergoes abnormality of micropylen hich is not formed. After pollination, explain the effect of that abnormality to the fertilisation process that occur.
-Stigma secretes____solution
-Stimulate the___of pollen grain and formation of pollen___
-Pollen tube grows down towards the___
-____nucleus through mitosis forms___male gametes
-Pollen tube secrete___to digest___tissue
-Pollen tube______penetrate ovule through P/micropyle
-Tube nucleus___
-Tip of the pollen tube___
-Two male gamete cannot enter the embryo__
-Double fertilisation does not occur
-___zygote cannot be formed
-Triploid____nuclues cannot be formed
-____/seed cannot be formed
sucrose, germination, tube, ovule, generative, 2, enzyme, style, cannot, degenerate, burst, sac, diploid, endosperm, fruit