click below
click below
Normal Size Small Size show me how
Nat 5 Biology 2.3
Reproduction
Question | Answer |
---|---|
Which body cells are diploid? | All body cells, apart from gametes |
How is a gamete different from a normal body cell? | Haploid chromosome number |
What does diploid mean | Two sets of chromosomes in a cell. In humans this is 23 pairs (46). |
What does haploid mean? | Half the normal number of chromosomes in a cell. In humans this is 23. |
How many chromosomes are there in a human gamete? | 23 |
How many chromosomes are there in a normal human cell? | 46 |
Name the organs that produce male gametes in plants and animals | Testes (animals)/ anthers (plants) |
State the name of male gametes in plants and animals . | Sperm (animals) / pollen (plants) |
Name the organs that produce female gametes in plants and animals | Ovaries (animals) / ovaries (Plants) |
State the name of female gametes in plants and animals | Eggs/ova/ovum (animals) / ovules (plants) |
Define fertilisation. | Fusion of two haploid gametes (nuclei) to produce a diploid zygote (divides to form an embryo). |