Human Reproduction, NCERT important Questions for NEET 


Human Reproduction 

NEET SYLLABUS
Human Reproduction: Male and female reproductive systems; Microscopic anatomy of testis and ovary;
Gametogenesis-spermatogenesis & oogenesis; Menstrual cycle; Fertilisation, embryo development upto blastocyst
formation, implantation; Pregnancy and placenta formation (Elementary idea); Parturition (Elementary idea); Lactation
(Elementary idea).
Reproductive health: Need for reproductive health and prevention of sexually transmitted diseases (STD);
Birth control-Need and Methods, Contraception and Medical Termination of Pregnancy (MTP); Amniocentesis;
Infertility and assisted reproductive technologies – IVF, ZIFT, GIFT (Elementary idea for general awareness).



46. Correct sequence of spermatogenesis:  (a) spermatogonia 

(b) spermatids 

(c) primary spermatocyte 

(d) secondary spermatocyte 

(e) spermatozoa

 a →c→d→ b →e


47. After spermiogenesis; sperm head become embedded into the.. 

Sertoli cells 


48. Match the column 


 

 Column-A 

 Column-B

 A.

 Spermiation

 Released of sperms from the seminiferous tubules

 B.

 Insemination

 Semen is released by the penis into the vagina

 C.

 Ejaculation

 Released of sperms outside the male body

 

 

 


 a-(i), b-(ii), c-(i)


49. Match the column :- 

 

 Column-A 

 Column-B

 (a)

 Spermatogonia

(i) multiply by mitotic division

 (b)

 Primary spermatocyte

(ii) undergo second meiotic division

 (c)

 Secondary spermatocytes 

(ii)undergo meiosis-I

 (d)

 Spermatids

(iv) Transformed into sperms by the process of spermiogenesis 


 a-(i), b-ii), c-(ii), d-(iv) 

         


50. How many structures are haploid ?  Spermatogonia, spermatozoa, spermatids, primary spermatocyte, secondary spermatocytes.

3(Spermatozoa, secondary      spermatocyte, spermatid) 


51. How many structures are diploid ?, Sperms, spermatid, spermatogonia, primary spermatocyte,  secondary spermatocytes 

2 (Spermatogonia, primary spermatocyte)


52. Spermatogenesis starts at the age of ___(A)___ due to significant  increase in the secretion of ___(B)___. 

(A) Puberty (B) GnRH 


53. ____(A)___ acts at the leyding cells and stimulates synthesis and secretion of ___(B)___

(A) LH (B) androgens


54. The sperm head contains an elongated diploid nucleus. (True/false) 

False 


55. Which part of sperm produce energy for the movement of tail ? 

Middle piece 


56. The human male ejaculates about ___(A)____ million sperms during
a coitus of which for normal fertility at least ____(B)___ percent sperms must have normal shape and size and at least ___(C)___ percent of themmust show vigorous motility. 

(A) 200-300 (B) 60 (C) 40 


57. The functions of male sex accessory ducts and glands are maintained by the...

Testicular hormones (Androgens) 


58. The process of formation of a mature female gamete is called ? 

Oogenesis 


59. The oogenesis is initiated during the .
......  stage.

Embryonic development


60. How many primary follicles are left in each ovary at puberty ? 

60,000 - 80,000 


61. Correct sequence of follicular development :  

(a) Graafian follicle (Mature tertiary) 

(b) Primary follicle 

(c) Tertiary follicle 

(d) Secondary follicle 

b→d→c→ a


62. The Graafian follicle ruptures to release the ___(A)___ from the ovary by the process called ___(B)___

(A)Secondary oocyte (B) Ovulation


63. The reproductive cycle in the female primates is known as  ........

Menstrual cycle

 64. The first menstruation begins at ___(A)___ and is called ___(B)___

(A) Puberty (B) Menarche


65. In human females, menstruation is repeated at an average interval 
of about ?

28 or 29 days 


66. How many ovum is released during the middle of each menstrual cycle ? 

One


67. Menstrual phase is completed about ? 

3-5 days 


68. The menstrual flow results due to breakdown of ... 

Endometrium 


69. The menstrual phase is followed by the which phase ? 

Follicular phase 


70. During follicular phase changes in the ovary and the uterus are induced by changes in the levels of ___(A)___ and ___(B)___ hormones. 

(A) Pituitary (B) Ovarian


71. Both LH and FSH attain a peak level about .... of menstrual  cycle. 

mid - cycle


72. Which hormone is mainly responsible for ovulation? 

LH 


73. Which hormone is essential for maintenance of endometrium? 

Progesterone 


74. In human beings, menstrual cycles ceases around the age of ....

50 years


75. The process of fusion of a sperm with an ovum is called? 

Fertilisation 


76. After completion of second meiotic division of the secondary oocyte and results in the formation of a ___(A)___ and a haploid ___(B)___

(A) Second polar body (B) Ovum


77. How many chromosomes will be there in the zygote of human ? 

46 

78. It is correct to say that the sex of the baby is determined by the father and not by the mother. (False/true) 

True


79. The ___(A)___ division starts as the zygete moves through the isthmus of the oviduct called (B). 

(A) Mitotic (B) Cleavage


80. The embryo with 8 to 16 blastomeres is called ? 

Morula 


81. The blastomeres in the blastocyst are arranged into an outer layer called ___(A)___ and an inner group of cells attached to trophoblast called ___(B)___. 

(A) Trophoblast (B) Inner cell mass 


82. Some finger like projection appear on the trophoblast called ? 

Chorionic villi 


83. The structural and functional unit between developing embryo and  matemal body called ? 

Placenta


84. The placenta is connected to the embryo through an...

 Umbilical cord 


85. Placenta acts as an .......... 

Endocrine tisue 


86. Which of the following hormones are not secrete by placenta ? HCG, hPL, progesterone, oxytocin, estrogen, prolactin, relaxin

Oxytocin, prolactin


87. Match the column :- 

 

 Column-A 

 Column-B

 (a)

After one month of Pregnancy 

(i) Heart is formed 

 (b)

End of Second month of pregnancy 

(ii) Major organ systems are formed

 (c)

End of first trimester of pregnancy 

(iii) first Movement of foetus

 (d)

During the fifth month of

 (iv)Limbs and digits develop


 a-(i), b-(iv), c-i), d-(iii) 



88. Parturition is induced by a complex neuroendocrine mechanism.(True/false) 

True


89. The signals for parturition originate from the fully developed foetus  only. (True/false) 

False


90. Which hormone acts on the uterine muscle and causes stronger  uterine contractions. 

Oxytocin


91. The milk produced dur ing the initial few days of lactation is called ? 

Colostrum




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