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 Multiple Choice QuestionsMultiple Choice Questions

141.

Which one of the following hormones is responsible for uterine contraction during parturition?

  • Relaxin

  • Vasopressin

  • Oxytocin

  • Prolactin


142.

During entry into the ovum, acrosome of sperm releases

  • hyaluronidase

  • alkaline phosphorylase

  • acid phosphatase

  • carbonic anhydrase


143.

Indicate the correct sequence during spermatogenesis.

  • Spermatozoa  spermatogonia  spermatid  spermatocyte

  • Spermatogonia  spermatocyte  spermatid  spermatozoa

  • Spermatid  spermatocyte  spermatozoa  spermatogonia

  • Spermatocyte  spermatozoa  spermatid  spermatogonia


144.

Egg in female gametophyte is accompanied by

  • antipodal cells

  • synergids

  • definitive nucleus

  • tube nucleus


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145.

During fertilisation, zona pellucida is dissolved by

  • hyaluronidase

  • hyaluronic acid

  • renin

  • acrosin


146.

Study the following with regard to spermatogenesis.

I. Spermatogonia

II. Secondary spermatocyte

III. Spermatogonial stem cells

IV. Primary spermatocyte

V. Spermatid

Arrange them in the correct sequence.

  • III, IV, II, I, V

  • III, I, IV, II, V

  • I, II, III, IV, V

  • III, IV, I, II, V


147.

The phase involved in the process of spermateliosis is

  • Multiplication phase

  • Growth phase

  • Maturation phase

  • Differentiation phase


148.

Cryptorchidism in males is

  • male sterility due to prostate

  • enlargement of prostate gland

  • inguinal hernea

  • hidden testis


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149.

Where does hyaline cartilage occur in an embryo?

  • Entire skeleton of the embryo

  • surface of bones at joints

  • pinna of the outer ear and in epiglottis

  • intervertebral discs of the spinal column


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150.

Menstrual cycle is the cyclic changes in the reproductive tract of primate females. Given below are some statements related with menstrual cycle.

I. Oestrogen is the hormone active during proliferative phase.

II. The uterine endometrium and glands grow further during secretory phase.

III. At the end of proliferative phase, corpus luteum degenerates in the ovary.

IV. The cycle ends with the menstrual phase, when menstrual flow occurs and lasts for 3-5 days.

Choose the correct option.

  • I, II and III

  • II, III and IV

  • I and II

  • III and IV


C.

I and II

Statement I and II are correct.

Menstrual cycle consists of three phases, namely, menstrual phase, proliferative phase/ follicular phase and secretory phase or luteal phase.

The cycle starts with the menstrual phase, when menstrual flow occurs and lasts for 3-5 days. Proliferative phase (5-14day) consists of growth of endometrium of uterus, Fallopian tube and vagina. At the end of secretory phase, corpus luteum degenerates in the ovary, progesterone secretion fails, the over grown uterine endometrium breaks down and menstruation takes place.


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