fertilization and courtship

Question 1

Whats the importances of fertilization

Answer 1

ensures existance
prevents extinction

Question 2

two forms of courtship and differences

Answer 2

-simple strategies
- use of chemicals

-complex strategies
-female favouring

Question 3

how does courtship maximise reproduction (3)

Answer 3

1. ensure suitable mates are found
2. coyrtship is always timed to suit male and female
3. use of energy expennditures usually by males

Question 4

two form of fertilization

Answer 4

1. internal fertilization
2. external fertilization

Question 5

difference between semen and sperm

Answer 5

1. sperm
   - actual living organism
   2.semen
   - fluid surrounding sperm
   - acts as a transport medium
   - acts as a alkaline for acidic environment of vagina
   - chemicals that activate swimming in sperm
   - protects sperm against infection

Question 6

properties of cloaca (1)

Answer 6

• hole in birds for excretion, urination and reproduction