Comparing Reproductive Strategies

 

Sea urchin

Earthworm

Fish
(Species?)

Frog

Bird
(species?)

Mammal (species?)

# of eggs released at one time [S,M,L]
 

 

 

 

 

 

 

Internal or external fertilization

 

 

 

 

 

 

 

Internal or external development

 

 

 

 

 

 

 

Source of nutrition for developing embryo

 

 

 

 

 

 

Source of nutrition post partum

 

 

 

 

 

 

 

Type of protection/care provided to developing young

 

 

 

 

 

 

Type of protection/care provided to young, post partum

 

 

 

 

 

 


1) In organisms that have external fertilization, are the number of eggs produced large, medium or small? Why is this necessary?

2) As care and protection increases, how do the number of eggs released compare? Explain why.