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

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Question 1 of 9

Biology

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

1.Umbilical cord

2.Amnion

3.Placenta

4.Allantois

Question 1 of 9

Question 2 of 9

2. How does a zygote differ from an ovum?

1.A zygote is much larger

2.A zygote divides by meiosis

3.A zygote has more chromosomes

4.A zygote is smaller

Question 2 of 9

Question 3 of 9

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

1.Zygote

2.Blastula

3.Archenteron

4.Three germ layers

Question 3 of 9

Question 4 of 9

4. Which of the following are mismatched?

1.Endoderm; lining of the digestive tube

2.Mesoderm; notochord

3.Ectoderm; circulatory system

4.Mesoderm; reproductive system

Question 4 of 9

Question 5 of 9

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

1.Endoderm

2.The yolk sac

3.The chorion

4.Mesoderm

Question 5 of 9

Question 6 of 9

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

1.Cleavage

2.Induction

3.Gastrulation

4.Metamorphosis

Question 6 of 9

Question 7 of 9

7. Identical twins result from the fertilization of:

1.One ovum by one sperm

2.Two ova by two sperms

3.One ovum by two sperms

4.Two ova by one sperm

Question 7 of 9

Question 8 of 9

8. Which of the following has three germ layers?

1.Embryonic disc

2.Trophoblast

3.Gastrula

4.Blastula

Question 8 of 9

Question 9 of 9

9. 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.Progesterone

2.Follicle stimulating hormone

3.Oxytocin

4.Luteinizing hormone

Question 9 of 9

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