The correct sequence of embryonic development is from Biology Hu

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 Multiple Choice QuestionsMultiple Choice Questions

131.

Fertilization occur in

  • uterus

  • ureter

  • vagina

  • fallopian tube


132.

Name the hormone that has no role in menstruation

  • LH

  • FSH

  • GH

  • TSH


133.

In spermatogenesis, reduction division of chromosome occurs during conversion of

  • spermatogonia to primary spermatocytes

  • primary spermatocytes to secondary spermatocytes

  • secondary spermatocytes to spermatids

  • spermatids to sperms


134.

Presence of which of the following hormone in the urine confirms pregnancy?

  • Progesterone

  • Oestrogen

  • Human chorionic gonadotropin

  • Prolactin


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135.

A pregnant female delivers a baby, who suffers from stunted growth, mental retardation low intelligence quotient and abnormal skin. This is the result of

  • deficiency of iodine in diet

  • low secretion of growth hormone

  • cancer of the thyroid gland

  • over secretion of pars distalis


136.

What is the correct sequence of sperm formation?

  • Spermatid, Spermatocyte, Spermatogonia, Spermatozoa

  • Spermatogonia, Spermatocyte, Spermatozoa, Spermatid

  • Spermatogonia, Spermatozoa, Spermatocyte, Spermatid

  • Spermatogonia, Spermatocyte, Spermatid, Spermatozoa


137.

Menstrual flow occurs due to lack of

  • progesterone

  • FSH

  • oxytocin

  • vasopressin


138.

Which one of the following is not the function of placenta? It

  • facilitates supply of oxygen and nutrients to embryo

  • secretes oestrogen

  • facilitates removal of carbon dioxide and waste material from embryo

  • secretes oxytocin during parturition


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139.

The correct sequence of embryonic development is

  • Blastula - Morula - Zygote - Gastrula - Embryo

  • Zygote - Blastula - Morula - Gastrula - Embryo

  • Zygote - Morula - Blastula - Gastrula - Embryo

  • Gastrula - Morula - Zygote - Blastula - Embryo


C.

Zygote - Morula - Blastula - Gastrula - Embryo

The mitotic division starts as the zygote moves towards the isthmus of the oviduct towards the uterus called cleavage. The cleavage converts the egg into a compact mass of blastomeres called morula, which ultimately transforms into blastula. The blastula precedes the formation of the gastrula in which the germ layers of the embryo forms. Gastrulation is followed by organogenesis, when individual organs develop within the newly formed germ layers. Each layer gives rise to specific tissues and organs in the developing embryo. Thus, the correct sequence is

Zygote  Morula  Blastula  Gastrula  Embryo


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140.

If spermatogenesis proceeds too rapidly, inhibin is released. Inhibin reduces the secretion of

  • Luteinising Hormone (LH)

  • Follicle Stimulating Hormone (FSH)

  • Testosterone

  • Interstitial Cell Stimulating Hormone (ICSH)


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