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Test: Human Reproduction - 1


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25 Questions MCQ Test Biology Class 12 | Test: Human Reproduction - 1

Test: Human Reproduction - 1 for NEET 2022 is part of Biology Class 12 preparation. The Test: Human Reproduction - 1 questions and answers have been prepared according to the NEET exam syllabus.The Test: Human Reproduction - 1 MCQs are made for NEET 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Human Reproduction - 1 below.
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Test: Human Reproduction - 1 - Question 1

Which of the following is a primary sex organ of female?

Detailed Solution for Test: Human Reproduction - 1 - Question 1
  • Ovary is the primary sex organ of female reproductive system in human beings. 
  • Ovaries are the gonads that produce female gametes (ova) as well as various steroid hormones (ovarian hormones).

Fig: Image showing primary sex organ i.e. Ovary

Hence, the correct option is A.

NCERT Reference: Page no. 44 of topic “3.2 THE FEMALE REPRODUCTIVE SYSTEM” of chapter 3.

Test: Human Reproduction - 1 - Question 2

Seminal plasma in human males is rich in _________.

Detailed Solution for Test: Human Reproduction - 1 - Question 2
  • Male accessory glands secrete seminal plasma. A pair of seminal vesicles, bulbourethral glands, and a prostate gland are among the male accessory glands.
  • Seminal plasma is made up of secretions from these glands and is high in fructose, calcium, and enzymes.
  • It is the fluid part of the sperm-ejaculated.  
  • It aids in the movement of sperm from the testes to the female genital tract.

Hence, the correct option is A.

NCERT Reference: Page no. 44 of topic “3.1 THE MALE REPRODUCTIVE SYSTEM” of chapter 3.

Test: Human Reproduction - 1 - Question 3

The external genitalia of human female is called as _________.

Detailed Solution for Test: Human Reproduction - 1 - Question 3
  • The external genitalia are accessory structures of female reproductive system that are external to vagina they are also referred to as vulva or pudendum.
  • The external genitalia includes the labia majora, mons pubis, labia minora, clitoris and glands within vestibules.

Hence, the correct option is B.

NCERT Reference: Page no. 46 of topic “3.2 THE FEMALE REPRODUCTIVE SYSTEM” of chapter 3.

Test: Human Reproduction - 1 - Question 4

The primary sex organ of human male is _________.

Detailed Solution for Test: Human Reproduction - 1 - Question 4

Testis is the primary sex organ in human male as it produce sperm & hormone- testesterone which aids in the process of reproduction.

Male Reproductive System:

Fig: Image of primary sex organ in male i.e. Testes

Hence, the correct option is C.
NCERT Reference: Topic “3.1 THE MALE REPRODUCTIVE SYSTEM” of chapter 3.

Test: Human Reproduction - 1 - Question 5

The endometrium in female is the lining of _________.

Detailed Solution for Test: Human Reproduction - 1 - Question 5

The innermost lining of the uterus is called the endometrium. It is the spongy layer that breaks down during the menstrual cycle along with mucus through the vagina.

Female Reproductive System:

Hence, the correct option is B.

NCERT Reference: Page no. 46 of topic “3.2 THE FEMALE REPRODUCTIVE SYSTEM” of chapter 3.

Test: Human Reproduction - 1 - Question 6

Each testes has about 250 compartments called as _________.

Detailed Solution for Test: Human Reproduction - 1 - Question 6
  • Each testis contains about 250 compartments called testicular lobules.
  • Each testicular lobule contains one to three highly coiled seminiferous tubules that produce sperms.

Fig: Image showing testicular lobules consists of seminiferous tubules. 

Hence, the correct option is D.

NCERT Reference: Page no. 43 of topic “3.1 THE MALE REPRODUCTIVE SYSTEM” of chapter 3.

Test: Human Reproduction - 1 - Question 7

Sertoli cells present in the testis act as _______.

Detailed Solution for Test: Human Reproduction - 1 - Question 7
  • Sertoli cell is the “nurse” in testes that regulates the process of spermatogenesis, germ cell proliferation and differentiation.
  • One Sertoli cell supports a certain number of germ cells during these processes. 

Fig: Sertoli cells with embedded sperms

Hence, the correct option is B.
NCERT Reference: Page no. 43 of topic “3.1 THE MALE REPRODUCTIVE SYSTEM” of chapter 3.

Test: Human Reproduction - 1 - Question 8

A network of tubules present inside the testis to store the sperm is called _________.

Detailed Solution for Test: Human Reproduction - 1 - Question 8
  • Seminiferous tubules of testis open into the vasa efferentia through rete testis.
  • Rete testis is a network of tubules inside the testis to store the sperm temporarily.

Fig: Image showing rete testes which stores sperm temporarily 

Hence, the correct option is B.
NCERT Reference: Page no. 43 of topic “3.1 THE MALE REPRODUCTIVE SYSTEM” of chapter 3.

Test: Human Reproduction - 1 - Question 9

Interstitial cells or leydig cells are present between _________.

Detailed Solution for Test: Human Reproduction - 1 - Question 9
  • Interstitial cells or Leydig cells are found adjacent to seminiferous tubules in the testicles.
  • They produce testosterone in the presence of luteinizing hormones.
  • Leydig cells are polyhedral in shape and have a large prominent nucleus, an eosinophilic cytoplasm and numerous lipid-filled vesicles.
  • Leydig cells synthesise and secrete testicular hormones called androgens.

Hence, the correct option is B.
NCERT Reference: Page no. 43 of topic “3.1 THE MALE REPRODUCTIVE SYSTEM” of chapter 3.

Test: Human Reproduction - 1 - Question 10

A mature ovarian follicle is called _________.

Detailed Solution for Test: Human Reproduction - 1 - Question 10
  • Graafian follicle is the follicular stage following the first meiotic division but before ovulation.
  • Each graafian follicle consists of a maturing ovum.
  • It also consists of an antrum and follicular cells.

Structure of Graafian follicle:

Hence, the correct option is A.
NCERT Reference: Page no. 49 of topic “3.3 GAMETOGENESIS ” of chapter 3.

Test: Human Reproduction - 1 - Question 11

In which part of sperm, mitochondria are present?

Detailed Solution for Test: Human Reproduction - 1 - Question 11
  • Mitochondria are known as the cell's powerhouse, and the middle component of sperm contains a high number of them.
  • Mitochondria provides  energy required by Sperms for active motility.

Structure of Sperm:

The middle piece of the sperm contains

Hence, the correct option is B.
NCERT Reference: Page no. 48 of topic “3.3 GAMETOGENESIS ” of chapter 3.

Test: Human Reproduction - 1 - Question 12

What is the period of pregnancy called?

Detailed Solution for Test: Human Reproduction - 1 - Question 12

The time taken by a developing embryo inside the womb of a placental mammal is called the gestation period, at the end of which a baby is delivered in the act of parturition.

Hence, the correct option is A.

NCERT Reference: Page no. 54 of topic “3.7 PARTURITION AND LACTATION” of chapter 3.

Test: Human Reproduction - 1 - Question 13

The conversion of spermatid into spermatozoa is called?

Detailed Solution for Test: Human Reproduction - 1 - Question 13
  • Spermiogenesis is the process through which immature nonmotile spermatids develop into motile sperms.

  • Each spermatid undergoes metamorphosis to develop into spermatozoa or sperms having head, neck and tail.

  • Acrosome is present at the tip of head that contain enzyme for hydrolysis of the wall of ovum during fertilisation.

Hence, the correct option is C.
NCERT Reference: Page no. 47 of topic “3.3 GAMETOGENESIS ” of chapter 3.

Test: Human Reproduction - 1 - Question 14

The number of polar bodies formed during oogenesis in human being is:

Detailed Solution for Test: Human Reproduction - 1 - Question 14
  • The total number of polar bodies generated during oogenesis is three.
  • Every meiotic division produces four haploid cells, one of which is permitted to develop while the other three are left inactive.
  • These 3 non functional haploid cells are called polar bodies.

Fig: The process of Oogenesis showing the formation of one ovum and three polar bodies.
Hence, the correct option is D.

Test: Human Reproduction - 1 - Question 15

In oocyte secondary maturation occurs in _________.

Detailed Solution for Test: Human Reproduction - 1 - Question 15
  • In the secondary oocyte, the meiotic division is arrested at the metaphase stage.
  • After ovulation, the secondary oocyte passes into fallopian tube, where meiosis II is completed only after the entry of sperm.

Hence, the correct option is C.
NCERT Reference: Page no. 45 of topic “3.2 THE FEMALE REPRODUCTIVE SYSTEM” of chapter 3.

Test: Human Reproduction - 1 - Question 16

Beginning of menstrual cycle is called as _________.

Detailed Solution for Test: Human Reproduction - 1 - Question 16
  • At puberty, the menstrual cycle begins in girls. The beginning of menstrual cycle is called menarche.
  • It starts at the age of about 11 to 12 years in girls.

Hence, the correct option is C.

NCERT Reference: Page no. 49 of topic “3.4 MENSTRUAL CYCLE” of chapter 3.

Test: Human Reproduction - 1 - Question 17

Which of the following hormone is produced in female only during pregnancy?

Detailed Solution for Test: Human Reproduction - 1 - Question 17
  • It is made almost exclusively in the placenta.
  • hCG hormone levels found in the mother's blood and urine, rise a lot during the first trimester. 
  • hCG Maintains the corpus luteum throughout the early stages of pregnancy. It is used to detect pregnancy.

Hence, the correct option is B.

NCERT Reference: Page no. 53 of topic “3.6 PREGNANCY AND EMBRYONIC DEVELOPMENT” of chapter 3.

Test: Human Reproduction - 1 - Question 18

The _________ is the sexual intercourse between male and female sex.

Detailed Solution for Test: Human Reproduction - 1 - Question 18
  • Transfer of male gametes (sperm) into the female genital tract occurs during sexual intercourse that may lead to the fertilisation of the ovum for pregnancy.
  • Sexual intercourse is called coition or coitus.

Hence, the correct option is B.
NCERT Reference: Page no. 51 of topic “3.5 FERTILISATION AND IMPLANTATION” of chapter 3.

Test: Human Reproduction - 1 - Question 19

Ovulation occurs on the _________ day of menstrual cycle.  

Detailed Solution for Test: Human Reproduction - 1 - Question 19
  • The release of ovum from ovary during menstrual cycle is called ovulation.
  • Ovulation occurs in the middle of menstrual cycle that is on 14-16th day of start of menstrual cycle.

Hence, the correct option is C.
NCERT Reference: Page no. 51 of topic “3.4 MENSTRUAL CYCLE” of chapter 3.

Test: Human Reproduction - 1 - Question 20

The cellular layer that disintegrates and regenerates again and again is _______.

Detailed Solution for Test: Human Reproduction - 1 - Question 20
  • The functional layer of the human endometrium is a highly regenerative tissue undergoing monthly cycles of growth, differentiation, and shedding during a woman's reproductive years.
  • Fluctuating levels of circulating estrogen and progesterone orchestrate this dramatic remodelling of human endometrium.

Hence, the correct option is B.
NCERT Reference: Page no. 50 of topic “3.4 MENSTRUAL CYCLE” of chapter 3.

Test: Human Reproduction - 1 - Question 21

During which month of pregnancy the first movement of fetus is observed?

Detailed Solution for Test: Human Reproduction - 1 - Question 21
  • The movement of the fetus is observed in the fifth month of pregnancy.
  • In the first month heart is formed.
  • In the second month limbs and digits are formed.
  • At the end of three months, all major organs and genital organs are formed.

Hence, the correct option is C.
NCERT Reference: Page no. 54 of topic “3.6 PREGNANCY AND EMBRYONIC DEVELOPMENT” of chapter 3.

Test: Human Reproduction - 1 - Question 22

How does human sperm locomote?

Detailed Solution for Test: Human Reproduction - 1 - Question 22
  • The sperm has the following components: head, neck, middle piece and tail.
  • Head is spherical, consisting of the nucleus and acrosome.
  • Neck contains centrioles.
  • Middle piece have mitochondria that are spirally arranged.
  • The tail of sperm is the flagellum, which contains axial filaments and propels sperm to the egg.

Human sperm moves by | Biology Questions

Hence, the correct option is A.
NCERT Reference: Page no. 48 of topic “3.3 GAMETOGENESIS” of chapter 3.

Test: Human Reproduction - 1 - Question 23

Acrosome is filled with _________.

Detailed Solution for Test: Human Reproduction - 1 - Question 23
  • The head of mature mammalian sperm is made of elongated nucleus covered by acrosome.
  • The acrosome is filled with hydrolytic enzymes that help in fertilization of ovum.
  • These enzymes called sperm lysins that dissolve the membranes enveloping the ovum and help the sperm cell to enter the ovum by penetrating the egg membrane.

Hence, the correct option is C.

NCERT Reference: Page no. 48 of topic “3.3 GAMETOGENESIS” of chapter 3.

Test: Human Reproduction - 1 - Question 24

Hormone responsible for milk ejection after the birth of baby is:

Detailed Solution for Test: Human Reproduction - 1 - Question 24
  • The mammary glands of the female undergo differentiation during pregnancy and start producing milk towards the end of pregnancy by the process called lactation.
  • Lactiferous glands present inside the mammary gland produce milk due to the release of the hormone oxytocin from pituitary glands.

Hence, the correct option is D.

NCERT Reference: Page no. 54 of topic “3.7 PARTURITION AND LACTATION” of chapter 3.

Test: Human Reproduction - 1 - Question 25

The yellowish coloured milk secreted from the breast shortly after birth of the baby is called?

Detailed Solution for Test: Human Reproduction - 1 - Question 25
  • After parturition, mammary glands start producing milk. The yellowish coloured milk is called colostrums.
  • This milk contains antibodies that provide immunity to newly born baby.

Hence, the correct option is C.
NCERT Reference: Page no. 54 of topic “3.7 PARTURITION AND LACTATION” of chapter 3.

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