External vs Internal Fertilization

Question 1

How does external fertilization work?

Answer 1

Sperm and egg join outside the body

Question 2

What are the 3 advantages to external fertilization?

Answer 2

• Little energy required to mate
• A lot of babies are made at once
• Spread widely in an environment (not all in one place at once)

Question 3

What are the 2 disadvantages of external fertilization?

Answer 3

• Many will die (mostly due to not being protected)
• Many will not be fertilized

Question 4

How does internal fertilization work?

Answer 4

Sperm & egg join inside the parents and the embryo