Multiple Choice. Pahelp lang po ako.

1. When the sperm cell and egg cell are joined together to form a unit, it is called ____.
a. embryo
b. fertilization
c. reproduction
d. zygote

2. Another term used for sex cells is ___.
a. embryo
b. gametes
c. ovary
d. zygotes

3. The time between the laying of egg until its hatching of the new one is called ___.
a. incubation
b. gestation
c. pregnancy
d. sexual

4. The following statements are true with oviparous animals except one.
a. They undergo incubation period.
b. They are born as live young animal.
c. The developing embryo within an egg gets nourishment from its yolk.
d. They lay their eggs and continue their development until hatching period.

5. Which is correct about asexual reproduction?
a. The ovary produces egg cells.
b. No sex cell is needed to form a new organism.
c. Sex cells from male and female animals are needed.
d. The embryo is soon developed as a young individual.

6. The developed zygote is called ____.
a. embryo
b. gametes
c. ovary
d. testis

7. Which animal undergoes external fertilization?
a. cat
b. cow
c. fish
d. lion

8. The following statements describe sexual reproduction. Which one is NOT?
a. The ovary produces egg cells.
b. No sex cell is needed to form a new organism.
c. Sex cells from male and female animals are needed.
d. The embryo is soon developed as a young individual.

9. Which best defines internal fertilization?
a. Both sex cells are released in water.
b. It is the initial phase in the sexual reproduction.
c. The fertilized egg is nourished from its yolk.
d. The zygote is developing within the parent's body.

10. Dogs, fish, and butterflies all undergo ___.
a. asexual reproduction
b. external fertilization
c. internal fertilization
d. sexual reproduction