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Biology M.C.Q (1 Marks)

Human Reproduction · Chhattisgarh Board (CGBSE) STD 12 Science (Chhattisgarh - English Medium). 268 questions.

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M.C.Q (1 Marks)

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MCQ 11 Mark
The correct set of a single endocrine gland hormone is:
  • A
    Oxytocin, prolactin, $\text{ACTH}$
  • ✓
    Oxytocin, vasopressin, $\text{ADH}$
  • C
    Thyroxin, secretin, $\text{ACTH}$
  • D
    Epinephrin, cortisol, $\text{ICSH}$
Answer
Correct option: B.
Oxytocin, vasopressin, $\text{ADH}$
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MCQ 21 Mark
Sertoli cells are found in:
  • A
    Kidney of rabbit
  • B
    Ovary of frog
  • ✓
    Testes of rabbit
  • D
    Ovary of rabbit
Answer
Correct option: C.
Testes of rabbit
Sertoli cell is one of the cells present in the seminiferous tubule of the testes.
It provides nourishment to the developing sperm and hence are called 'nurse' cells.
Sertoli cells are developed by the testes $-$ determining factor protein.
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MCQ 31 Mark
The concept that organizer is essential for embryonic development was given by:
  • A
    $J.$ Axelrod
  • B
    $K.$ Landsteiner
  • ✓
    $H.$ Spemann
  • D
    $I. P.$ Pavlov
Answer
Correct option: C.
$H.$ Spemann
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MCQ 41 Mark
Which of the following hormones is not secreted by human placenta?
  • A
    $\text{HCG}.$
  • B
    Estrogens.
  • C
    Progesterone.
  • ✓
    $\text{LH}.$
Answer
Correct option: D.
$\text{LH}.$
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MCQ 51 Mark
Corona radia is made up of:
  • ✓
    Follicular cells around the oocyte.
  • B
    Stratum functionalis.
  • C
    Zona pellucid around the oocyte.
  • D
    All of these.
Answer
Correct option: A.
Follicular cells around the oocyte.
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MCQ 61 Mark
Sustentacular cells is another name of:
  • A
    Leydig cells
  • B
    Oocytes
  • ✓
    Sertoli cells
  • D
    Oogonia
Answer
Correct option: C.
Sertoli cells
Sustentacular cells are the cells that are associated with providing structural support.
A type of sustentacular cells is Sertoli cells which are found in the stratified epithelium of seminiferous tubules.
Sertoli cells are also known as supporting cells.
They are elongated and pyramidal which partially envelope the spermatogenic cell which nourish the spermatozoa.
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MCQ 71 Mark
Embryonic body form stage is characterised by:
  • A
    Basic body plan emerging.
  • B
    Miniature adult features.
  • ✓
    Stage of development resembling other species.
  • D
    Tissues not fully formed.
Answer
Correct option: C.
Stage of development resembling other species.
In the embryonic developmental stage, an embryo develops within the amniotic sac, under the lining of the uterus.
This stage is characterized by the formation of most internal organs and external body structures.
It is also characterized by the stage of development resembling other species.
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MCQ 81 Mark
The vas deferens connects the epididymis to the:
  • ✓
    Seminal vesicles
  • B
    Urethra
  • C
    Testes
  • D
    Prostate gland
Answer
Correct option: A.
Seminal vesicles
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MCQ 91 Mark
After birth, colostrum is released from mammary glands which is rich in.
  • A
    Fat and low in proteins.
  • B
    Proteins and low in fat.
  • ✓
    Proteins, antibodies and low in fat.
  • D
    Proteins, fat and low in antibodies.
Answer
Correct option: C.
Proteins, antibodies and low in fat.
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MCQ 101 Mark
Which extra$-$embryonic membrane in humans prevents desiccation of the embryo inside the uterus?
  • A
    Chorion.
  • B
    Allantois
  • C
    Yolk sac.
  • ✓
    Amnion.
Answer
Correct option: D.
Amnion.
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MCQ 111 Mark
The process of formation of ova is called:
  • A
    Ovulation
  • B
    Oviparous
  • ✓
    Oogenesis
  • D
    None of the above
Answer
Correct option: C.
Oogenesis
Oogonia develops into the primary oocytes.
In meiosis $I$ the primary oocyte forms a polar body and a secondary oocyte.
After meiosis $I,$ the haploid secondary oocyte initiates meiosis $II.$
When meiosis $II$ is completed, an ootid and another polar body is created.
Polar bodies degenerate at the end of meiosis $II,$ leaving only the ootid that develops into a mature ovum.
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MCQ 121 Mark
Which of the following hormone maintains the function of male sex accessory gland and ducts?
  • A
    Estrogen.
  • ✓
    Androgen.
  • C
    Progesterone.
  • D
    Luteinizing hormone.
Answer
Correct option: B.
Androgen.
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MCQ 131 Mark
Oestrous cycle is found in:
  • A
    Primates.
  • ✓
    Non Primates.
  • C
    Placental mammals.
  • D
    Birds.
Answer
Correct option: B.
Non Primates.
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MCQ 141 Mark
Extra-embryonic membranes of the mammalian embryo are derived from:
  • A
    Inner cell mass.
  • B
    Trophoblast.
  • ✓
    Formative cells.
  • D
    Follicle cells.
Answer
Correct option: C.
Formative cells.
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MCQ 151 Mark
Ovulation occurs under the influence of:
  • A
    Follicle-stimulating hormone.
  • ✓
    Luteinising hormone.
  • C
    Progesterone.
  • D
    Estrogen.
Answer
Correct option: B.
Luteinising hormone.
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MCQ 161 Mark
Correct sequence in development is
  • A
    Fertilization $–$ Cleavage $–$ Morula $–$ Zygote $–$ Blastula $–$ Gastrula.
  • B
    Fertilization $–$ Zygote $–$ Blastula $–$ Morula $–$ Cleavage $-$ Gastrula.
  • ✓
    Fertilization $–$ Zygote $–$ cleavage $–$ Morula $–$ Blastula $-$ Gastrula.
  • D
    None of these.
Answer
Correct option: C.
Fertilization $–$ Zygote $–$ cleavage $–$ Morula $–$ Blastula $-$ Gastrula.
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MCQ 171 Mark
Identify the wrong statement from the following:
  • A
    High levels of estrogen triggers the ovulatory surge.
  • B
    Orgonial cells start to proliferate and give rise to functional ova in regular cycles from puberty onwards.
  • C
    Sperms released from seminiferous tubules are poorly motile$/$ non$-$motile.
  • ✓
    Progesterone level is high during the post ovulatory phase of menstrual cycle.
Answer
Correct option: D.
Progesterone level is high during the post ovulatory phase of menstrual cycle.
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MCQ 181 Mark
Secretion of progesterone by corpus luteum is initiated by.
  • A
    Thyroxine.
  • ✓
    $\text{LH}.$
  • C
    $\text{MSH}.$
  • D
    Testosterone.
Answer
Correct option: B.
$\text{LH}.$
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MCQ 191 Mark
Occurrence of Leydig’s cells and their secretion is
  • A
    Ovary and estrogen.
  • B
    Liver and cholesterol.
  • C
    Pancreas and glucagon.
  • ✓
    Testis and testosterone.
Answer
Correct option: D.
Testis and testosterone.
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MCQ 201 Mark
Which of the following is a function of seminal vesicle and prostate glands?
  • ✓
    Production of plasma of semen, protection and nourishment of sperm.
  • B
    Production of sperm, protection and nourishment of sperm.
  • C
    Production of ovum, protection and nourishment of sperm.
  • D
    None of the above.
Answer
Correct option: A.
Production of plasma of semen, protection and nourishment of sperm.
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MCQ 211 Mark
Spermiation is the process of the release of sperms from:
  • ✓
    Seminiferous tubules.
  • B
    Vas deferens.
  • C
    Epididymis.
  • D
    Prostate gland.
Answer
Correct option: A.
Seminiferous tubules.
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MCQ 221 Mark
Seminiferous tubules are found in:
  • ✓
    Testis
  • B
    Ovary
  • C
    Kidney
  • D
    Lung
Answer
Correct option: A.
Testis
The inside of the testes is divided into small compartments called lobules.
Each lobule contains a section of seminiferous tubule lined with epithelial cells.
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MCQ 231 Mark
The nutritive medium for the ejaculated sperms is given by:
  • ✓
    Seminal fluid
  • B
    Vaginal fluid
  • C
    Uterine lining
  • D
    Fallopian tube
Answer
Correct option: A.
Seminal fluid
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MCQ 241 Mark
Unfertilized egg of human contains:
  • A
    One $Y$ chromosome
  • B
    $X$ and $Y$ chromosome
  • C
    $XX$ chromosome
  • ✓
    One $X$ chromosome
Answer
Correct option: D.
One $X$ chromosome
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MCQ 251 Mark
What is true about cleavage in fertilized egg of human?
  • A
    Meroblastic.
  • B
    Starts when egg reaches uterus.
  • ✓
    Starts in fallopian tube.
  • D
    It is identical to normal mitosis.
Answer
Correct option: C.
Starts in fallopian tube.
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MCQ 261 Mark
Prostate gland is present.
  • A
    On ureter
  • B
    On kidney
  • C
    On testis
  • ✓
    Around urethra
Answer
Correct option: D.
Around urethra
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MCQ 271 Mark
Vasa efferentia are the ductules leading from.
  • A
    Epididymis to urethra.
  • B
    Vas deferens to epididymis.
  • ✓
    Rete testis to vas deferens.
  • D
    Testicular lobules to rete testis.
Answer
Correct option: C.
Rete testis to vas deferens.
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MCQ 281 Mark
Which one of the following is not a male accessory gland?
  • A
    Seminal vesicle.
  • ✓
    Ampulla.
  • C
    Prostate.
  • D
    Bulbourethral gland.
Answer
Correct option: B.
Ampulla.
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MCQ 291 Mark
Secretions from which one of the following are rich in fructose, calcium and some enzymes?
  • A
    Liver.
  • B
    Pancreas.
  • C
    Salivary glands.
  • ✓
    Male accessory glands.
Answer
Correct option: D.
Male accessory glands.
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MCQ 301 Mark
Which one of the following statement is incorrect about menstruation?
  • A
    During normal menstruation about $40 \ mL$ blood is lost.
  • ✓
    The menstrual fluid can easily clot.
  • C
    At menopause in the female, there is especially abrupt increase in gonadotropic hormones.
  • D
    The beginning of the cycle of menstruation is called menarche.
Answer
Correct option: B.
The menstrual fluid can easily clot.
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MCQ 311 Mark
What is the correct sequence of sperm formation?
  • A
    Spermatid, spermatocyte, spermatogonia, spermatozoa.
  • B
    Spermatogonia, spermatocyte, spermatozoa, spermatid.
  • C
    Spermatogonia, spermatozoa, spermatocyte, spermatid.
  • ✓
    Spermatogonia, spermatocyte, spermatid, spermatozoa.
Answer
Correct option: D.
Spermatogonia, spermatocyte, spermatid, spermatozoa.
The correct sequence of sperm formation is:
Spermatogonia $\rightarrow$ Spermatocyte $\rightarrow$ Spermatid $\rightarrow$ Spermatozoa.
So, the correct answer is 'Option $D-$ Spermatogonia, Spermatocyte, Spermatids, Spermatozoa'.
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MCQ 321 Mark
Which layer develops first during embryonic development?
  • A
    Ectoderm
  • B
    Mesoderm
  • ✓
    Endoderm
  • D
    Both $B$ and $C$
Answer
Correct option: C.
Endoderm
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MCQ 331 Mark
Which of the following is a finger like structure and lies at the upper junction of the two labia minora above the urethral opening?
  • ✓
    Clitoris.
  • B
    Oviduct.
  • C
    Ampulla.
  • D
    Chorionic villi.
Answer
Correct option: A.
Clitoris.
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MCQ 341 Mark
In most mammals, the testes are located in scrotal sac for:
  • ✓
    Spermatogenesis
  • B
    Sex differentiation
  • C
    More space to visceral organs
  • D
    Independent functioning of kidney
Answer
Correct option: A.
Spermatogenesis
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MCQ 351 Mark
After ovulation, Graafian follicle regresses into.
  • ✓
    Corpus luteum.
  • B
    Corpus callosum.
  • C
    Corpus albicans.
  • D
    Corpus atresia.
Answer
Correct option: A.
Corpus luteum.
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MCQ 361 Mark
Stratum germinativum is an example of which kind of epithelium?
  • ✓
    Cuboidal.
  • B
    Ciliated.
  • C
    Columnar.
  • D
    Squamous.
Answer
Correct option: A.
Cuboidal.
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MCQ 371 Mark
Immediately after ovulation, the mammalian egg is covered by a membrane known as
  • ✓
    Zona pellucida.
  • B
    Corona radiata.
  • C
    Chorion.
  • D
    All of these.
Answer
Correct option: A.
Zona pellucida.
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MCQ 381 Mark
The $LH$ surge from the anterior pituitary gland:
  • A
    Occurs just prior to menstruation.
  • ✓
    Occurs just prior to ovulation.
  • C
    Is responsible for follicle development.
  • D
    Stimulates an estrogen surge from the ovaries.
Answer
Correct option: B.
Occurs just prior to ovulation.
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MCQ 391 Mark
Which of the following happens when egg is not fertilized by sperm in an woman's body?
  • ✓
    Unfertilized egg and the lining from the uterus leave the body.
  • B
    Only unfertilized egg leaves the body.
  • C
    Only uterine lining is shed.
  • D
    Both unfertilized egg and uterine wall are diminished inside the body.
Answer
Correct option: A.
Unfertilized egg and the lining from the uterus leave the body.
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MCQ 401 Mark
If mammalian ovum fails to get fertilized, which one of the following is unlikely?
  • A
    Corpus luteum will disintegrate.
  • ✓
    Estrogen secretion further decreases.
  • C
    Primary follicle starts developing.
  • D
    Progesterone secretion rapidly declines.
Answer
Correct option: B.
Estrogen secretion further decreases.
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MCQ 411 Mark
Which one of the following is the correct matching of the events occurring during menstrual cycle?
  • ✓
    Development of $:$ Secretory phase and increased secretion of progesterone.
  • B
    Menstruation$:$ breakdown of myometrium and ovum not fertilized.
  • C
    Ovulation $: \text{LH}$ and $\text{FSH}$ attain peak level and sharp fall in the secretion of progesterone.
  • D
    Proliferative phase: Rapid regeneration of myometrium and maturation of Graafian follicle.
Answer
Correct option: A.
Development of $:$ Secretory phase and increased secretion of progesterone.
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MCQ 421 Mark
Which one of the following is not a part of male penis?
  • A
    Corpora cavernosa
  • B
    Glans
  • C
    Urethra
  • ✓
    Seminiferous tubule
Answer
Correct option: D.
Seminiferous tubule
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MCQ 431 Mark
Name the phase of menstrual cycle when fertilization is possible.
  • A
    Follicular
  • ✓
    Luteal
  • C
    Bleeding phase
  • D
    None of the above
Answer
Correct option: B.
Luteal
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MCQ 441 Mark
Middle piece of mammalian sperm possesses.
  • A
    Mitochondria and centriole.
  • ✓
    Mitochondria only.
  • C
    Centriole only.
  • D
    Nucleus and mitochondria.
Answer
Correct option: B.
Mitochondria only.
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MCQ 451 Mark
The correct order of milk secretion from the mammary gland is:
  • ✓
    Alveoli $\rightarrow$ mammary tubules $\rightarrow$ mammary duct $\rightarrow$ ampulla$\rightarrow$ lactiferous duct.
  • B
    Ampulla $\rightarrow$ mammary tubules $\rightarrow$ mammary duct $\rightarrow$ Alveoli$\rightarrow$ lactiferous duct.
  • C
    Lactiferous duct $\rightarrow$ Ampulla $\rightarrow$ Alveoli $\rightarrow$ mammary duct $\rightarrow$ mammary tube.
  • D
    None.
Answer
Correct option: A.
Alveoli $\rightarrow$ mammary tubules $\rightarrow$ mammary duct $\rightarrow$ ampulla$\rightarrow$ lactiferous duct.
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MCQ 461 Mark
By which process sperms released from the seminiferous tubules?
  • ✓
    Spermiation.
  • B
    Insemination.
  • C
    Spermatogenesis.
  • D
    Spermiogenesis.
Answer
Correct option: A.
Spermiation.
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MCQ 471 Mark
A woman could still have menstrual periods after the surgical removal of:
  • A
    Both ovaries.
  • ✓
    One ovary only.
  • C
    One ovary and the uterus.
  • D
    Uterus only.
Answer
Correct option: B.
One ovary only.
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MCQ 481 Mark
There is no cell division involved in.
  • A
    Embryogenesis.
  • ✓
    Spermiogenesis.
  • C
    Oogenesis.
  • D
    All of these.
Answer
Correct option: B.
Spermiogenesis.
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MCQ 491 Mark
The fluid which is rich in calcium citrate, fibrinolysin, acid phosphatase and contributes about $30\%$ of the total volume of semen is released by:
  • A
    Cowper's glands
  • ✓
    Prostate gland
  • C
    Seminal vesicles
  • D
    Epididymis
Answer
Correct option: B.
Prostate gland
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MCQ 501 Mark
At menopause, which of the following is excreted along with urine?
  • ✓
    $\text{FSH}$
  • B
    $\text{MSH}$
  • C
    $\text{ACTH}$
  • D
    $\text{ADH}$
Answer
Correct option: A.
$\text{FSH}$
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