Sexual Reproduction

Question 1

What is internal fertilization?

Answer 1

When sperm are deposited directly into female where it unites with the egg inside the female body

Question 2

What is embryonic development?

Answer 2

When an embryo uses yolk within an egg as nourishment

Question 3

What is Oviparity?

Answer 3

Development in an egg that is OUTSIDE of the body

Question 4

What is Ovoviviparity?

Answer 4

Development in an egg that stays INSIDE the body

Question 5

What is Viviparity?

Answer 5

When embryonic development takes place within the mother

Question 6

What is external fertilization?

Answer 6

When the sperm and egg unite outside of the parent’s body

Question 7

What are the 3 phases of early embryonic development?

Answer 7

1. Cleavage 2. Gastrulation 3. Organogenesis

Question 8

What happens during the Cleavage (1st) stage?

Answer 8

A zygote divides into separate sections

Question 9

What happens during the Gastrulation (2nd) stage?

Answer 9

Cells begin to fold withing leading to the digestive tube being created

Question 10

What does Organogenesis lead to?

Answer 10

Development of the neural tube which leads to creation of brain and spinal cord