12th Class Biology Human Reproduction Question Bank

done Case Based - Human Reproduction Total Questions - 23

• question_answer1)

  Study the given figure of human male reproductive system and answer the questions that follows

  (i) Prostate gland is a

  A)
  digestive gland done clear
  B)
  sperm producing gland done clear
  C)
  semen secreting accessory gland of male done clear
  D)
  hormone producing gland of the ovary done clear
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• question_answer2)

  Study the given figure of human male reproductive system and answer the questions that follows

  (ii) Bulbourethral gland is also known as

  A)
  prostate gland                 done clear
  B)
  Cowper's gland done clear
  C)
  perineal gland                 done clear
  D)
  salivary gland done clear
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• question_answer3)

  Study the given figure of human male reproductive system and answer the questions that follows

  (iii) Seminal vesicle is present between

  A)
  prostate gland and urethra done clear
  B)
  urinary bladder and rectum done clear
  C)
  above the testis done clear
  D)
  near epididymis done clear
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• question_answer4)

  Study the given figure of human male reproductive system and answer the questions that follows

  (iv) How many compartments (approximately) are there in each human testis?

  A)
  250       done clear
  B)
  300     done clear
  C)
  350                               done clear
  D)
  400 done clear
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• question_answer5)

  Direction: Read the following and answer the questions from given below

  The average length of the menstrual cycle is 28-29 days, but this can vary between woman and from one cycle to the next. The menstrual cycle is controlled by many different glands and the hormones that these glands produce. The menstrual cycle is a biofeedback system, which means each structure and gland is affected by the activity of the others menstruation is the elimination of the thickened lining of the uterus from the body through vagina, menstrual fluid contains blood, cells from the lining of the uterus and mucus.

  The average length of a period is between three days and one week. The four phases of the menstrual cycle include menstruation, the follicular phase, ovulation and the luteal phase.

  (i) The shortest phase in menstrual cycle is

  A)
  menstrual phase done clear
  B)
  ovulatory phase done clear
  C)
  secretory phase done clear
  D)
  proliferative phase done clear
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• question_answer6)

  Direction: Read the following and answer the questions from given below

  The average length of the menstrual cycle is 28-29 days, but this can vary between woman and from one cycle to the next. The menstrual cycle is controlled by many different glands and the hormones that these glands produce. The menstrual cycle is a biofeedback system, which means each structure and gland is affected by the activity of the others menstruation is the elimination of the thickened lining of the uterus from the body through vagina, menstrual fluid contains blood, cells from the lining of the uterus and mucus.

  The average length of a period is between three days and one week. The four phases of the menstrual cycle include menstruation, the follicular phase, ovulation and the luteal phase.

  (ii) Main function of corpus luteum is

  A)
  facilitate fertilisation done clear
  B)
  facilitate ovulation done clear
  C)
  secrete progesterone done clear
  D)
  facilitate passage of ova in oviduct done clear
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• question_answer7)

  Direction: Read the following and answer the questions from given below

  The average length of the menstrual cycle is 28-29 days, but this can vary between woman and from one cycle to the next. The menstrual cycle is controlled by many different glands and the hormones that these glands produce. The menstrual cycle is a biofeedback system, which means each structure and gland is affected by the activity of the others menstruation is the elimination of the thickened lining of the uterus from the body through vagina, menstrual fluid contains blood, cells from the lining of the uterus and mucus.

  The average length of a period is between three days and one week. The four phases of the menstrual cycle include menstruation, the follicular phase, ovulation and the luteal phase.

  (iii) Which hormone level reaches peak during luteal phase of menstrual cycle?

  A)
  Luteinizing hormone done clear
  B)
  Progesterone done clear
  C)
  Follicle stimulating hormone done clear
  D)
  Oestrogen done clear
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• question_answer8)

  Direction: Read the following and answer the questions from given below

  The average length of the menstrual cycle is 28-29 days, but this can vary between woman and from one cycle to the next. The menstrual cycle is controlled by many different glands and the hormones that these glands produce. The menstrual cycle is a biofeedback system, which means each structure and gland is affected by the activity of the others menstruation is the elimination of the thickened lining of the uterus from the body through vagina, menstrual fluid contains blood, cells from the lining of the uterus and mucus.

  The average length of a period is between three days and one week. The four phases of the menstrual cycle include menstruation, the follicular phase, ovulation and the luteal phase.

  (iv) The area that experiences the greatest change during menstrual cycle is

  A)
  vagina               done clear
  B)
  perimetrium done clear
  C)
  cervix                done clear
  D)
  endometrium done clear
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• question_answer9)

  Direction: Read the following and answer the questions from given below

  The average length of the menstrual cycle is 28-29 days, but this can vary between woman and from one cycle to the next. The menstrual cycle is controlled by many different glands and the hormones that these glands produce. The menstrual cycle is a biofeedback system, which means each structure and gland is affected by the activity of the others menstruation is the elimination of the thickened lining of the uterus from the body through vagina, menstrual fluid contains blood, cells from the lining of the uterus and mucus.

  The average length of a period is between three days and one week. The four phases of the menstrual cycle include menstruation, the follicular phase, ovulation and the luteal phase.

  (v) The events of the menstrual cycle are represented below. In which of the following option, the level of FSH, LH and progesterone is mentioned correctly.

  A)

  13th -14th days			21st to 23rd days
  FSH	LH	Progesterone	FSH	LH	Progesterone
  High	High	Low	Low	Low	High

  done clear
  B)

  13th -14th days			21st to 23rd days
  FSH	LH	Progesterone	FSH	LH	Progesterone
  High	High	High	Low	Low	Low

  done clear
  C)

  13th -14th days			21st to 23rd days
  FSH	LH	Progesterone	FSH	LH	Progesterone
  Low	Low	Low	High	High	High

  done clear
  D)

  13th -14th days			21st to 23rd days
  FSH	LH	Progesterone	FSH	LH	Progesterone
  Low	Low	High	High	Low	Low

  done clear
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• question_answer10)

  Direction: Read the following and answer the questions from given below

  Parturition or childbirth is the process of delivering the baby and placenta from the uterus to the vagina to the outside world. Also called labour and delivery. Parturition comes from the Latin Parturine, 'to be ready to bear young' and is related to partus, the past participle of parere, 'to produce'. A typical pregnancy lasts 40 weeks from the first day of your Last Menstrual Period (LMP) to the birth of the baby (parturition). It is divided into three stages called trimesters, first trimester, second trimester and third trimester. The foetus undergoes many changes throughout maturation.

  (i) Parturition is induced by

  A)
  neural mechanism done clear
  B)
  endocrine mechanism done clear
  C)
  neuroendocrine mechanism done clear
  D)
  hormonal mechanism done clear
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• question_answer11)

  Direction: Read the following and answer the questions from given below

  Parturition or childbirth is the process of delivering the baby and placenta from the uterus to the vagina to the outside world. Also called labour and delivery. Parturition comes from the Latin Parturine, 'to be ready to bear young' and is related to partus, the past participle of parere, 'to produce'. A typical pregnancy lasts 40 weeks from the first day of your Last Menstrual Period (LMP) to the birth of the baby (parturition). It is divided into three stages called trimesters, first trimester, second trimester and third trimester. The foetus undergoes many changes throughout maturation.

  (ii) Signals for parturition originate from

  A)
  both placenta as well as fully developed foetus done clear
  B)
  oxytocin released from maternal pituitary done clear
  C)
  placenta done clear
  D)
  fully developed foetus done clear
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• question_answer12)

  Direction: Read the following and answer the questions from given below

  Parturition or childbirth is the process of delivering the baby and placenta from the uterus to the vagina to the outside world. Also called labour and delivery. Parturition comes from the Latin Parturine, 'to be ready to bear young' and is related to partus, the past participle of parere, 'to produce'. A typical pregnancy lasts 40 weeks from the first day of your Last Menstrual Period (LMP) to the birth of the baby (parturition). It is divided into three stages called trimesters, first trimester, second trimester and third trimester. The foetus undergoes many changes throughout maturation.

  (iii) Which of the following hormones is responsible for both the milk ejection reflex and foetal-ejection reflex?

  A)
  Oestrogen          done clear
  B)
  Prolactin done clear
  C)
  Oxytocin            done clear
  D)
  Relaxin done clear
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• question_answer13)

  Direction: Read the following and answer the questions from given below

  Parturition or childbirth is the process of delivering the baby and placenta from the uterus to the vagina to the outside world. Also called labour and delivery. Parturition comes from the Latin Parturine, 'to be ready to bear young' and is related to partus, the past participle of parere, 'to produce'. A typical pregnancy lasts 40 weeks from the first day of your Last Menstrual Period (LMP) to the birth of the baby (parturition). It is divided into three stages called trimesters, first trimester, second trimester and third trimester. The foetus undergoes many changes throughout maturation.

  (iv) Identify the correct sequence in which the various stages of parturition take place.

   
  A)
  Shedding of placenta\[\to \]Dilation of cervix\[\to \] Delivery of baby done clear
  B)
  Dilation of the cervix\[\to \]Shedding of placenta \[\to \] Delivery of baby done clear
  C)
  Dilation of the cervix\[\to \]Delivery of the baby \[\to \]Shedding of placenta done clear
  D)
  None of the above done clear
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• question_answer14)

  Direction: Read the following and answer the questions from given below

  Parturition or childbirth is the process of delivering the baby and placenta from the uterus to the vagina to the outside world. Also called labour and delivery. Parturition comes from the Latin Parturine, 'to be ready to bear young' and is related to partus, the past participle of parere, 'to produce'. A typical pregnancy lasts 40 weeks from the first day of your Last Menstrual Period (LMP) to the birth of the baby (parturition). It is divided into three stages called trimesters, first trimester, second trimester and third trimester. The foetus undergoes many changes throughout maturation.

  (v)

  The following statements are drawn as conclusions from the above data.

  I. High level of HCG stimulates the synthesis of oestrogen and progesterone.

  II. High level of hCG stimulates the thickening of endometrium.

  III. The level of oestrogen and progesterone becomes high during pregnancy.

  Choose from above the correct conclusions.

  A)
  I and II              done clear
  B)
  II and III done clear
  C)
  I and III             done clear
  D)
  I, II and III done clear
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• question_answer15)

  Direction: Read the following and answer the questions from given below

  The human pregnancy lasts for about 9 months. During this embryo undergoes various developmental changes. In human beings, after one month of pregnancy, the embryo heart is formed. The first sign of growing foetus may be noticed by listening to the heart sound carefully. By the end of the second month of pregnancy, the foetus develops limbs and digits. By the end of 12 weeks (first trimester) most of the major organ systems are formed. For example, the limbs and external genital organs are well developed. The first movements of the foetus and appearance of har on the head are usually observed during the fifth month. By the end of about 24 weeks (end of second trimester) the body is covered with fine hair, eyelids separate and eyelashes are formed. By the end of nine months of pregnancy, the foetus is fully developed and is ready for delivery.

  (i) The three germ layers gives rise to

  A)
  tissues               done clear
  B)
  placenta done clear
  C)
  hormone            done clear
  D)
  limbs done clear
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• question_answer16)

  Direction: Read the following and answer the questions from given below

  The human pregnancy lasts for about 9 months. During this embryo undergoes various developmental changes. In human beings, after one month of pregnancy, the embryo heart is formed. The first sign of growing foetus may be noticed by listening to the heart sound carefully. By the end of the second month of pregnancy, the foetus develops limbs and digits. By the end of 12 weeks (first trimester) most of the major organ systems are formed. For example, the limbs and external genital organs are well developed. The first movements of the foetus and appearance of har on the head are usually observed during the fifth month. By the end of about 24 weeks (end of second trimester) the body is covered with fine hair, eyelids separate and eyelashes are formed. By the end of nine months of pregnancy, the foetus is fully developed and is ready for delivery.

  (ii) During the development of embryo these occurs first,

  A)
  differentiation of organs done clear
  B)
  differentiation of tissues done clear
  C)
  differentiation of organ systems done clear
  D)
  differentiation of cells done clear
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• question_answer17)

  Direction: Read the following and answer the questions from given below

  The human pregnancy lasts for about 9 months. During this embryo undergoes various developmental changes. In human beings, after one month of pregnancy, the embryo heart is formed. The first sign of growing foetus may be noticed by listening to the heart sound carefully. By the end of the second month of pregnancy, the foetus develops limbs and digits. By the end of 12 weeks (first trimester) most of the major organ systems are formed. For example, the limbs and external genital organs are well developed. The first movements of the foetus and appearance of har on the head are usually observed during the fifth month. By the end of about 24 weeks (end of second trimester) the body is covered with fine hair, eyelids separate and eyelashes are formed. By the end of nine months of pregnancy, the foetus is fully developed and is ready for delivery.

  (iii) Vigrous contraction of the uterus at the end of pregnancy causes

  A)
  lactation                        done clear
  B)
  placenta formation done clear
  C)
  cleavage                        done clear
  D)
  delivery of foetus done clear
  View Solution play_arrow

• question_answer18)

  Direction: Read the following and answer the questions from given below

  The human pregnancy lasts for about 9 months. During this embryo undergoes various developmental changes. In human beings, after one month of pregnancy, the embryo heart is formed. The first sign of growing foetus may be noticed by listening to the heart sound carefully. By the end of the second month of pregnancy, the foetus develops limbs and digits. By the end of 12 weeks (first trimester) most of the major organ systems are formed. For example, the limbs and external genital organs are well developed. The first movements of the foetus and appearance of har on the head are usually observed during the fifth month. By the end of about 24 weeks (end of second trimester) the body is covered with fine hair, eyelids separate and eyelashes are formed. By the end of nine months of pregnancy, the foetus is fully developed and is ready for delivery.

  (iv) In human adult female, oxytocin the major hormone produced during pregnancy to

  A)
  stimulate pituitary to secrete vasopressin done clear
  B)
  cause uterine contractions during parturition done clear
  C)
  secrete hormone from anterior pituitary done clear
  D)
  stimulate growth of mammary glands done clear
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• question_answer19)

  Direction: Read the following and answer the questions from given below

  The human pregnancy lasts for about 9 months. During this embryo undergoes various developmental changes. In human beings, after one month of pregnancy, the embryo heart is formed. The first sign of growing foetus may be noticed by listening to the heart sound carefully. By the end of the second month of pregnancy, the foetus develops limbs and digits. By the end of 12 weeks (first trimester) most of the major organ systems are formed. For example, the limbs and external genital organs are well developed. The first movements of the foetus and appearance of har on the head are usually observed during the fifth month. By the end of about 24 weeks (end of second trimester) the body is covered with fine hair, eyelids separate and eyelashes are formed. By the end of nine months of pregnancy, the foetus is fully developed and is ready for delivery.

  (v) Assertion [A] During pregnancy the levels of hormones like oestrogens and progestrogens are increased.

  Reason [R] The increased production of these hormones is essential for fetal growth.

  A)
  Both A and R are true and R is the correct explanation of A done clear
  B)
  Both A and R are true, but R is not the correct explanation of A done clear
  C)
  A is true, but R is false done clear
  D)
  Both A and Rare false done clear
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• question_answer20)

  Observe the schematic representation of oogenesis in human female and answer the following questions

  (i) Choose the correct match.

  A)
  A-Oogonia        done clear
  B)
  B-Primary oocyte done clear
  C)
  C-Secondary oocyte        done clear
  D)
  All of these done clear
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• question_answer21)

  Observe the schematic representation of oogenesis in human female and answer the following questions

  (ii) One oogonium forms

  A)
  1 ovum +3 polar bodies done clear
  B)
  1 ovum+1 polar body done clear
  C)
  1 ovum without centrioles + 3 polar bodies done clear
  D)
  single ovum and no polar body done clear
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• question_answer22)

  Observe the schematic representation of oogenesis in human female and answer the following questions

  (iii) A human female has the maximum number of primary oocytes in her ovaries

  A)
  at birth done clear
  B)
  just prior to puberty done clear
  C)
  early in her fertile years done clear
  D)
  midway through her fertile years done clear
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• question_answer23)

  Observe the schematic representation of oogenesis in human female and answer the following questions

  (iv) What is the role of polar bodies during oogenesis?

  A)
  Polar bodies ensure that the ovum contain the most cytoplasm      done clear
  B)
  They rid the body of defective sets of chromosomes, leaving the -good- set within the ovum done clear
  C)
  They are merely the byproduct of meiosis and serve no function done clear
  D)
  They prevent the development of most sets of multiple births done clear
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