Cauda epididymis leads to

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Vas deferens is larger duct arises from cauda epididymis and reach upto seminal vesicles.

In human beings, the developing embryo resides in

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In human beings, fertilization takes place in Fallopian duct and the embryo develops in uterus.

____ hormone is not secreted by the placenta.

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Vasopressin hormone is not secreted by the placenta.

A mature sperm has

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A mature sperm has a nucleus, an acrosome, a pair of centrioles and a tail.

The organ which is not part of the female reproductive system is ____.

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The organ which is not part of the female reproductive system is seminal vesicle which is part of the male reproductive system.

Location and secretion of Leydig's cells are

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Leydig's cells are present in testes and secrete male hormone testosterone.

At the end of first meiotic division, male sperm differentiates into

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After first meiotic division primary spermatocyte (diploid) gives rise to two secondary spermatocytes (haploid).

The secretion of ____ helps in lubrication of the urethra.

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The secretion of bulbourethral glands helps in lubrication of the urethra.During sexual arousal each gland produces a clear, viscous secretion known as pre-ejaculate. This fluid helps to lubricate the urethra for spermatozoa to pass through, neutralizing traces of acidic urine in urethra, and helps flush out any residual urine or foreign matter.

Corpus luteum is developed from ____.

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Corpus luteum is left over graafian follicle after the release of the ovum.

Immediately after fertilization the zygote ____.

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Immediately after fertilization the zygote divides by mitosis to form a blastocyst.

____ has haploid chromosomes.

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Secondary oocyte has haploid chromosomes as it is formed by the process of meiosis.

Urethral meatus is ____.

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Urethral meatus is external opening of the urethra. The urethra originates from the urinary bladder and extends through the penis to its external opening called the Urethral meatus.

Ovulation occurs in the ____ phase.

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Ovulation occurs in the luteal phase.

Parturition duct inn female is called

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Vagina serves as birth canal during parturition.

The function of the epididymis is ____.

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The function of the epididymis is storage of sperm during maturation.

____ is not an accessory gland in human males.

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Vasa differentia is not an accessory gland in human males. It is part of the duct system in the male reproductive system.

Egg released by Graafian follicle is surrounded by ____.

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Egg released by Graffian follicle is surrounded by zona pellucida.

____ normally passes from a foetus to its mother through the placenta.

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Urea passes from the foetus to the mother through the placenta. The rest of the substances pass from the mother to the foetus.

Polar bodies are formed during ____.

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Polar bodies are formed during oogenesis.

Egg is liberated from ovary in

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Egg is liberated from ovary (ovulation) at secondary oocyte stage when the meiosis II is arrested in secondary oocyte. It will be induced by the sperm.

Oogenesis comprises

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Oogenesis is a process of formation development and maturation of haploid ova from diploid germinal cells.

The cavity present in the graafian follicle is

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The cavity of graafian follicle is antrum or follicular cavity.

In the male sperm, the mitochondria are located in the ____.

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In the male sperm, the mitochondria are located in the middle piece.

The organ which secretes FSH (follicle-stimulating hormone) is ____.

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The organ which secretes FSH (follicle-stimulating hormone) is pituitary gland.

Fertilization is

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Fertilization is union of haploid sperm with haploid ovum to form diploid zygote.

During the formation of the ovum, meiosis I occurs in the ____.

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During the formation of the ovum, meiosis I occurs in the primary oocyte.

Placenta is the region, where

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Placenta is the region where foetus receives nourishment from mother's blood.

The funnel shaped part of the fallopian tube which is closer to the ovary is ____.

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The funnel shaped part of the fallopian tube which is closer to the ovary is the infundibulum. This leads into the ampulla which leads to the isthmus which opens into the uterus.

The embryo at 16 celled stage is known as

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The embryo at the 16-celled stage is called the morula. It is the mass of cells resulting from the cleavage of the ovum before the formation of a blastula.

Clitoris in mammals is

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Clitoris in female is homologous to penis of male.

Class 12th Biology - 3 Human Reproduction MCQs
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Class 12th Biology - 3 Human Reproduction MCQs