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

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Question 1 of 9

Biology

1. 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.Luteinizing hormone

2.Progesterone

3.Follicle stimulating hormone

4.Oxytocin

Question 1 of 9

Question 2 of 9

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

1.Amnion

2.Placenta

3.Allantois

4.Umbilical cord

Question 2 of 9

Question 3 of 9

3. Identical twins result from the fertilization of:

1.Two ova by one sperm

2.One ovum by two sperms

3.One ovum by one sperm

4.Two ova by two sperms

Question 3 of 9

Question 4 of 9

4. Which of the following has three germ layers?

1.Gastrula

2.Blastula

3.Embryonic disc

4.Trophoblast

Question 4 of 9

Question 5 of 9

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

1.Mesoderm

2.Endoderm

3.The chorion

4.The yolk sac

Question 5 of 9

Question 6 of 9

6. Which of the following are mismatched?

1.Endoderm; lining of the digestive tube

2.Mesoderm; reproductive system

3.Mesoderm; notochord

4.Ectoderm; circulatory system

Question 6 of 9

Question 7 of 9

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

1.Induction

2.Gastrulation

3.Cleavage

4.Metamorphosis

Question 7 of 9

Question 8 of 9

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

1.Archenteron

2.Three germ layers

3.Zygote

4.Blastula

Question 8 of 9

Question 9 of 9

9. 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 9 of 9

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