Sexual Reproduction in animals Flashcards
0
Q
Gonads
A
- where the gametes are produced
- male gonads are testes.. Produce sperm in seminiferous tubules
- female are ovaries.. Produce oocytes
1
Q
Sexual reproduction requires
A
- production of gametes
- union of gametes to form a zygote
- development of a zygote into another adult
2
Q
Hermaphrodytes
A
Contain male and female gonads
3
Q
Spermatogenesis
A
- sperm production
- occurs in the semeniferous tubules
- diploid cells (spermatagonia) undergo meiosis
- continuous process
4
Q
Oogenesis
A
- production of female gametes
- occurs in the ovaries
- one diploid cell undergoes meiosis to produce one egg and a polar body
- it is a discontinuous process while spermatogenesis is continuous
5
Q
Types of fertilization
A
- when an eff and sperm come together to form a zygote
1. Internal
2. External
6
Q
External fertilization
A
- occurs in vertebrate that reproduce in water
- female lays eggs in the water and male deposits sperm near it
- the sperm have flagella allowing them to swim to the eggs
7
Q
Internal fertilization
A
-provides a direct route for sperm to reach the egg
