Assertion   :       Implantation is the process of attachment of blastocyst on uterine endometrium.

Reason      :       Implantation is controlled by trophoblast and occurs by decidual cell reaction.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Assertion   :       Gastrular movements are morphogenetic.


Reason      :       During gastrulation, cells move in masses and towards definite direction.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Assertion   :       Asexual reproduction is also called blastogenesis.

Reason      :       In asexual reproduction, there is no  fusion of gametes.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Assertion   :       Sexual reproduction is advantageous than asexual reproduction.

Reason      :       It is rapid mode of reproduction while asexual reproduction is slow mode of reproduction.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Assertion   :       In human male, testes are extra-abdominal and lie in scrotal sacs.

Reason      :       Scrotum acts as thermoregulator and keeps testicular temperature lower by 2°C normal spermatogenesis.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Assertion   :       Urethra in human male acts as urinogenital canal.

Reason      :       Urethra carries only urine while sperms are carried by vasa deferentia only.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Assertion   :       Penis of male is homologous to clitoris of human female.

Reason      :       Both are highly sensitive and both supported by corpora cavernosa.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Assertion   :       At puberty, human male develops secondary sexual characters.

Reason      :       At puberty, there is decreased secretion of testosterone in male.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
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Assertion   :       Fallopian funnel of oviduct is with finger-like fimbriae.

Reason      :       Graafian follicle of ovary is with secondary oocyte hanging in cavity called antrum.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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The seminiferous tubules of the testis open into Vasa efferentia through …….

  • Rete Testis

  • Vas Deferens

  • Epididymis

  • Urethera

Which of the following structures loop over urinary bladder?

  • Epididymis

  • Vas Deferens

  • Ejaculatory Duct

  • Urethra

Which of the following ascends to abdomen?

  • Epididymis

  • Vas Deferens

  • Vasa efferentia

  • Ejaculatory Duct

Prostatic part of urethra won't have secretion from

  • Bulbourethral Gland

  • Prostate Gland

  • Seminal Vesicle

  • Ejaculatory Duct

Assertion   :       Corpus luteum degenerates if the ovum remains unfertilized.

Reason      :       Corpus luteum secretes progesterone which maintains the pregnancy.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Assertion   :       Size of breasts increases at puberty in human female.

Reason      :       Prolactin secretion starts at puberty.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Assertion   :       Vagina acts as copulation canal and fertilization canal.

Reason      :       Both insemination and fusion of gametes occur in vagina of female.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Assertion   :       In human male, there are perianal glands near the anus.

Reason      :       Perianal glands secretes sex-attractant pheromone which initiates sexual desire in human female.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Assertion   :       Primary spermatocytes of testes are haploid.

Reason      :       Primary spermatocytes are formed by meiosis-I in the spermatogonia.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Assertion   :       Spermiation is the transformation of spermatid into sperm.

Reason      :       During spermiation, sperms get nutrition from sertioli cells.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Assertion            :       During fertilization only head of spermatozoa enters egg.


Reason               :       If several spermatozoa hit the egg at same time, all can enter the egg.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Assertion             :       In morula stage, cells divide without increase in size.

Reason                 :      Zona pellucida remain undivided till cleavage is complete.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Assertion   :       Holoblastic cleavage with almost equal sized blastomeres is a characteristic of placental animals.

Reason      :      Eggs of most mammals, including humans, are of centrolecithal type

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Humans are

  • . Oviparous females
  • . Sexually Reproducing
  • . Considered to be sexually active before puberty
  • . More than one option is correct

Which of the following order is not correct for the events of human reproduction?

  • Gametogenesis- Insemination- Fertilization

  • Fertilization-Insemination- Gametogenesis

  • Implantation-Gestation-Parturition

  • Insemination-Fertilization- implantation

Which of the following is not correct with respect to Human reproduction?

  • There is remarkable similarity between the reproductive events of males and females

  • Continuation of sperm formation in old man

  • No ovum production in females after 50 years

  • More than one option are not correct.

Male reproductive system of humans has not

  • A testis only

  • Accessory Ducts

  • Glands

  • External Genitalia

Testes of humans are located in

  • Inside abdominal cavity

  • Within a tunnel like structure

  • Within Scrotum

  • More than one option is correct

Suppose the internal temperature of body is 36.5 degree celsius now what will be the temperature required for human spermatogenesis?

  • 34.2 degree Celsius
  • 33 degree Celsius
  • 38 degree Celsius
  • 38.2 degree Cell

What is not correct with respect to testis in adults?

  • Spherical in shape

  • 4-5 cm in length and width of 2-3 cm

  • Covered by a dense covering

  • Made up of 250 testicular compartments

How many seminiferous tubules will be there per testicular lobule?

  • 1 to 3

  • 500

  • 1000

  • At maximum, 4

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Practice Zoology Quiz Questions and Answers