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Study the figure given below and answer ...

Study the figure given below and answer the questions that follows.

(i) Name the stage of human embryo the figure represents.
(ii) Identify 'A' in the figure and mention its function.
(iii) Mention the fate of the inner cell mass after implantation in the uterus.

Text Solution

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(i) Blastocyst.
(ii) .A. is trophoblast. The trophoblast layer gets attached to endometrium and later forms chorionic villi.
(iii) The inner cell mass gets differentiated into an embryo.
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ARIHANT PUBLICATION-HUMAN REPRODUCTION -QUESTIONS FOR PRACTICE (Part III Menstrual Cycle, Fertilisation and Embryonic Development)(Short Answer Type Questions)
  1. What is fertilization ? In man, where does it take place ?

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  2. In our society the women are often blamed for giving birth to daughter...

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  3. A sperm has just fertilised a human egg in the Fallopian tube. Trace t...

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  4. Name the embryonic stage that gets implanted in the uterine wall of th...

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  5. When and where do chorionic villi appear in humans? State their functi...

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  6. A woman passes out hCG in the urine during the pregnancy. Why?

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  7. Mention the name of hormones and their source organs produced only dur...

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  8. Placenta acts as an endocrine gland. Explain.

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  9. What are the functions of placenta ?

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  10. Write a note on placenta.

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  11. When and how does placenta develop in human female?

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  12. Where is morula formed in humans? Explain the process of its developme...

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  13. State the function of yolk.

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  14. (i) Explain the events taking place at the time of fertilisation of an...

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  15. Draw the following diagrams related to human reproduction and label th...

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  16. Study the figure given below and answer the questions that follows. ...

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  17. What is parturition? Which hormones are involved in induction of partu...

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  18. Why parturition is called a neuroendocrine mechanism? Explain. Descr...

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  19. How is the milk production regulated by hormones in human female? Expl...

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  20. Why is it important to feed the newborn babies on colostrum?

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