Gamete Formation (Leaving Cert Biology): Flashcards
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Gamete definition
Gamete definition
Haploid sex cell capable of fertilisation
Haploid cell definition
Haploid cell definition
Cell with one set of chromosomes
Diploid cell definition
Diploid cell definition
Cell with two sets of chromosomes
Meiosis definition
Meiosis definition
Nuclear division producing cells with half the chromosome number
Male part of flower producing pollen
Male part of flower producing pollen
Stamen
Female part of flower producing ovules
Female part of flower producing ovules
Carpel
Where male gametes form in flowers
Where male gametes form in flowers
Anther (part of stamen)
Number of pollen sacs in anther
Number of pollen sacs in anther
Four
Product of microspore mother cell meiosis
Product of microspore mother cell meiosis
Four haploid pollen grains (tetrad)
Nuclei in mature pollen grain
Nuclei in mature pollen grain
Two: tube nucleus and generative nucleus
Where female gametes form
Where female gametes form
Ovule (in ovary, part of carpel)
Haploid nuclei after meiosis in ovule
Haploid nuclei after meiosis in ovule
Four (three die, one remains)
Mitosis divisions in embryo sac formation
Mitosis divisions in embryo sac formation
Three times
Total nuclei in mature embryo sac
Total nuclei in mature embryo sac
Eight haploid nuclei
Female gamete in embryo sac
Female gamete in embryo sac
Egg cell (from egg nucleus)