External and Internal Fertilisation (Grade 12 NSC Matric Life Sciences): Flashcards
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Fertilisation definition
Fertilisation definition
When gametes join to create a zygote
Gametes
Gametes
Male and female reproductive cells
External fertilisation location
External fertilisation location
Outside female's body in aquatic environment
External fertilisation requirement
External fertilisation requirement
Water as medium for sperm to swim
Animals using external fertilisation
Animals using external fertilisation
Fish and amphibians
Internal fertilisation location
Internal fertilisation location
Inside the female's body
Animals using internal fertilisation
Animals using internal fertilisation
Reptiles, birds, and mammals
Gamete quantity: external vs internal
Gamete quantity: external vs internal
External: massive quantities; Internal: fewer needed
Precocial development
Precocial development
Young born well-developed, need minimal parental care
Altricial development
Altricial development
Young born underdeveloped, need extensive parental care