Chapter 25. 25·12–25·15 Human development occurs in specific stages, and 25·16...

Show What You Know - Self Quiz
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You must read each slide, and complete any questions on the slide, in sequence.

Instructions

Check your understanding of concepts from 25·12–25·15 Human development occurs in specific stages, and 25·16 Reproductive technology has benefits and dangers by answering the following questions.

1.

1. The three embryonic germ layers formed during gastrulation are ectoderm, endoderm, and ______________:

A.
B.
C.
D.
E.

Correct. (See section 25·12 Early embryonic development occurs during cleavage, gastrulation, and neurulation.)
Incorrect. (See section 25·12 Early embryonic development occurs during cleavage, gastrulation, and neurulation.)

2.

2. Which of the following events would lead to male development when a sperm meets with a normal egg?

A.
B.
C.
D.
E.

Correct. (See section 25·13 How does an embryo become male or female?)
Incorrect. (See section 25·13 How does an embryo become male or female?)

3.

3. Infertility of two prospective parents is defined as:

A.
B.
C.
D.
E.

Correct. (See section 25·16 Assisted reproductive technologies are promising and perilous.)
Incorrect. (See section 25·16 Assisted reproductive technologies are promising and perilous.)

4.

4. In humans, fetal growth is slowest during which trimester?

A.
B.
C.
D.
E.

Correct. (See section 25·14 There are three stages of pregnancy.)
Incorrect. (See section 25·14 There are three stages of pregnancy.)

5.

5. The gradual dilation of the human cervix occurs during:

A.
B.
C.
D.
E.

Correct. (See section 25·15 Pregnancy culminates in childbirth and the start of lactation.)
Incorrect. (See section 25·15 Pregnancy culminates in childbirth and the start of lactation.)

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