9. In sexual reproduction, what is the source of the genetic material in a zygote?

A. an egg cell only

C. a pollen and a sperm cell

B. a sperm cell only

D. an egg cell and a sperm cell

10. Which species can produce offspring that is genetically different from its

parents? A species that ___________.

A. has few variations

C. reproduces asexually

B. reproduces sexually

D. competes with a similar species

11. Which is NOT a characteristic of sexual reproduction?

A. Offspring is genetically identical with the parent.

B. Gametes from two parents unite to form a zygote.

C. Offspring is different from their parents and sibling.

D. Genetic variability of offspring help to ensure survival in changing

environmental conditions.

12. In what way flowers help to reproduce angiosperms? Flowers ____________.

A. support and protect the gametes

B. are important sources for human food

C. store nutrients needed for the plant to grow

D. help attract organisms needed for pollination

13. Which of the following statements is TRUE about external fertilization?

I. It is a feature of reproduction in which fertilization takes place outside an

organism’s body.

II. It is a feature of sexual reproduction in which sperm cells are transported

into the oviducts of the female.

III. It usually occurs in aquatic environments where both eggs and sperm are

released into the water.

IV. It happens during the process of spawning where one or several females

release their eggs and the male(s) release sperm in the same area, at the

same time.

A. I and II only

C. I, III, and IV only

B. III and IV

D. I, II, III, and IV

14. For fertilization to occur in most flowering plants, insects or other animals must

transport the pollen to the pistil. What must be taking place for fertilization to occur?

A. The plant must be exposed to sunlight during pollination.

B. The sperm cell in the pollen tube must reach the egg in the ovule.

C. The egg in the ovule must reach the top of the stigma where pollen is trapped.

D. All of these are correct.

15. Which of the following statements is CORRECT?

A. The radicle of the seed grows upwards.

B. After fertilization, the ovule forms a seed.

C. The stamen is the female part of the flower.

D. The embryo of the seed consists of the ovule and radicle.​