Growth and Development Biology Chapter 19 Mcqs Test Online Punjab Boards 12th Class

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Question 1 of 9

Biology

1. The end of cleavage is marked by the formation of

1.Three germ layers

2.Blastula

3.Zygote

4.Archenteron

Question 1 of 9

Question 2 of 9

2. In human development, ectoderm cells migrate through the primitive streak to form:

1.Endoderm

2.The chorion

3.The yolk sac

4.Mesoderm

Question 2 of 9

Question 3 of 9

3. Which of the following consists of both foetal and maternal tissue?

1.Umbilical cord

2.Amnion

3.Allantois

4.Placenta

Question 3 of 9

Question 4 of 9

4. Which of the following has three germ layers?

1.Gastrula

2.Embryonic disc

3.Trophoblast

4.Blastula

Question 4 of 9

Question 5 of 9

5. The process by which a tissue causes another tissue to differentiate is called:

1.Metamorphosis

2.Cleavage

3.Induction

4.Gastrulation

Question 5 of 9

Question 6 of 9

6. How does a zygote differ from an ovum?

1.A zygote divides by meiosis

2.A zygote has more chromosomes

3.A zygote is smaller

4.A zygote is much larger

Question 6 of 9

Question 7 of 9

7. Identical twins result from the fertilization of:

1.Two ova by one sperm

2.One ovum by one sperm

3.Two ova by two sperms

4.One ovum by two sperms

Question 7 of 9

Question 8 of 9

8. A woman has several miscarriages. Her doctor suspected that a hormonal insufficiency was causing the lining of the uterus to breakdown, as does during menstruation, terminating her pregnancies. Treatment with which of the following might help her pregnancy?

1.Oxytocin

2.Progesterone

3.Follicle stimulating hormone

4.Luteinizing hormone

Question 8 of 9

Question 9 of 9

9. Which of the following are mismatched?

1.Ectoderm; circulatory system

2.Mesoderm; notochord

3.Endoderm; lining of the digestive tube

4.Mesoderm; reproductive system

Question 9 of 9

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