Download Document

Name _________________________________________________ Date _____________ Period _____
HONORS BIOLOGY
Reproduction and Development, Worksheet 2
1. In an experiment, a researcher colored a bit of tissue on the outside of a frog gastrula with an
orange fluorescent dye. The embryo developed normally. When the tadpole was placed under
an ultraviolet light, which of the following glowed bright orange? Explain your answer.
a. The heart
d. The stomach
b. The pancreas
e. The liver
c. The brain
2. From which of the layers of the embryonic disk do the hair, nails, and glands of the skin arise?
a. Endoderm
c. Mesoderm
b. Ectoderm
3. Which of the following structures arises from the mesoderm?
a. Lining of the mouth
c. lining of the respiratory tract
b. muscle
d. epidermis
4. The embryonic stage ends at ______________________ weeks.
5. One difference between the blastula and gastrula stages of development is that
a. Blastula cells are more differentiated than gastrula cells.
b. There are many more cells in a blastula.
c. The blastula consists of more cell layers.
d. The blastula is a solid ball of cells, but the gastrula is hollow.
e. There is an opening from the cavity inside the gastrula to the outside.
6.
The function of the epididymis is to
a. Produce sex hormones
b. Provide the sperm with mobile tails
c. store sperm as they mature
d. supply some of the force needed for
ejaculation.
7. Which of the following substances is/are added to sperm cells by the seminal vesicle?
a. Acid
c. Glucose
b. Fructose
8. The inner lining of the uterus is the ____________________.
9. Label the following diagram:
10. Label the diagram below.
Answer the following questions using the diagram below.
11. What is happening in stage 1?
12. What term describes stage 2 above?
13. What term describes stage 5 (solid ball of cells)?
14. What term is used to describe stage 6 (hollow ball of cells)?
15. What term is used to describe stage 7?