Download Sexual Reproduction Notes

Name:_____________
Date:_____________
Sexual Reproduction Notes
3 stages of Sexual Reproduction
1. .
2. .
3. .
Mating:
Process by which
Mating Seasons (heat) for
Depending on species, mating can occur
Some animals mate
Fertilization
Recall:
--> cell division occurs if conditions are met.
1.T
2.N
3.S
4.P
(growth of embryo)
(prevent drying out)
External Fertilization
Sperm and egg
Common in animals
Releasing of gametes in water called
Both males and females produce
What dangers or difficulties lie in spawing?
External Fertilization
Why is it common in species that live in water?
What do mosses and ferns require in order for external fertilization to occur?
Name:_____________
Date:_____________
What advantages does external fertilization have? Disadvantages?
Advantages
Disadvantages
Internal Fertilization
Sperm cells are
Humans more than
Once sperm penetrates egg, membrane changes electrical charge -->
Why is this important?
Internal Fertilizaton
Advantages
Disadvantages