Multicellular Organisms - Reproduction Flashcards
1
Q
What is fertilisation?
A
Fusion of the nuclei of the two haploid gametes to produce a diploid zygote, which divides to form an embryo
2
Q
Where are FEMALE gametes made and what are they called in the following:
* Animals
* Plants
A
Animals: Egg cells, made in the ovaries
Plants: Ovules, made in the ovary
3
Q
Where are MALE gametes made and what are they called in the following:
* Animals
* Plants
A
Animals: Sperm, made in the testes
Plants: Pollen, made in the anther
4
Q
Haploid or Diploid?
* gametes (sex cells)
* zygote
* embryo
A
- Haploid
- Diploid
- Diploid
haploid gametes → diploid zygote → diploid embryo
5
Q
- Describe fertilisation in ANIMALS
- Describe fertilisation in PLANTS
A
- Nucleus of an ovum and sperm fuse together inside the egg to create the zygote, which divides into the embryo
- Pollen nucleus fuses with the ovule nucleus
