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Class 12 Exam  >  Class 12 Tests  >  Test : Previous Year - 1 - Class 12 MCQ

Test : Previous Year - 1 - Class 12 MCQ


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21 Questions MCQ Test - Test : Previous Year - 1

Test : Previous Year - 1 for Class 12 2024 is part of Class 12 preparation. The Test : Previous Year - 1 questions and answers have been prepared according to the Class 12 exam syllabus.The Test : Previous Year - 1 MCQs are made for Class 12 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test : Previous Year - 1 below.
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Test : Previous Year - 1 - Question 1
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The shared terminal duct of the reproductive and urinary system in the human male is:            [2014]

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Urethra is a tube that connects the urinary bladder to the genitals for the removal of fluids from the body. The urethra travels through the penis, and carries semen as well as urine. 

Test : Previous Year - 1 - Question 2
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The main function of mammalian corpus luteum is to produce:          [2014]

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The corpus luteum is a temporary endocrine structure in female mammals, that is involved in the production of relatively high levels of progesterone.
Thus, the correct answer is option (B), 'Progesterone'

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Test : Previous Year - 1 - Question 3
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Select the correct option describing gonadotropin activity in a normal pregnant female:           [2014]

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Synthesis of estrogen and progesterone due to high level of hCG is a normal gonadotropic activity in a normal pregnant female.

Test : Previous Year - 1 - Question 4
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Which of these is not an important component of initiation of parturition in humans ? [2015 RS]
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The role of prolactin is not concerned with initiation of parturition in humans. Prolactin is responsible for milk synthesis in mammary glands. When the levels of estrogen and progesterone become low at parturition, then anterior pituitary activates to release prolactin. 

Test : Previous Year - 1 - Question 5
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Capacitation refers to changes in the :           [2015 RS]
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Capacitation and acrosomal reaction occur before fertilization. The process of capacitation happens when sperms enter vagina. During this period, cholesterol vesicles are removed from the acrosome

Test : Previous Year - 1 - Question 6
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Which of the following cells during gametogenesis is normally diploid?                  [2015 RS]
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During gametogenesis, spermatogonia are diploid because of undergoing the process of meiosis. 

Test : Previous Year - 1 - Question 7
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Which of the following events is not associated with ovulation in human female?            [2015 RS]
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In human female, during ovulation, LH surge takes place due to hypersecretion of estrogen, which induces positive feed back to anterior pituitary for secretion of LH. 

Test : Previous Year - 1 - Question 8
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A childless couple can be assisted to have a child through a technique called GIFT. The full form of this technique is :       [2015 RS]
Detailed Solution for Test : Previous Year - 1 - Question 8

GIFT (Gamete Intra Fallopian Transfer) is a technique helping to have a child.

Test : Previous Year - 1 - Question 9
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Which of the following layers in an antral follicle is acelluar ?         [2015 RS]
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Zona pellucida is formed as a new membrane by secondary oocyte around itself.

Test : Previous Year - 1 - Question 10
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Fertilization in humans is practically feasible only if           [2016]
Detailed Solution for Test : Previous Year - 1 - Question 10

The word ampulla is derived from the Latin word 'flask'. Being the second portion of the fallopian tube, it is the intermediate dilated portion which immediately curves over the ovary. This is the common site of human fertilization as both the ovum and sperms are simultaneously transported here

Test : Previous Year - 1 - Question 11
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Select the incorrect statement :             [2016]
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In follicular phase of menstrual cycle. LH and FSH increase gradually and stimulate follicular development as well as secretion of estrogens by the growing follicles.

Test : Previous Year - 1 - Question 12
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Embryo with more than 16 blastomeres formed due to in vitro fertilization is transferred into    (AIPMT -- 2016)
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after morula form it is transferred into Uterus

Test : Previous Year - 1 - Question 13
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Which of the following depicts the correct pathway of transport of sperms?
Detailed Solution for Test : Previous Year - 1 - Question 13

NCERT page no-The male sex accessory ducts include rete testis, vasa efferentia, epididymis and vas deferens (Figure 3.1b). The seminiferous tubules of the testis open into the vasa efferentia through rete testis. The vasa efferentia leave the testis and open into epididymis located along the posterior surface of each testis.

Test : Previous Year - 1 - Question 14
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Match Column-I with Column-II and select the correct option using the codes given below (AIPMT-2016)
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Nebenkern is form by spiral arrangement of Mitochondria

Test : Previous Year - 1 - Question 15
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Several hormones like hCG, hPL, estrogen. progesterone are produced by  (AIPMT- 2016 -1)
Detailed Solution for Test : Previous Year - 1 - Question 15

Placenta form many hormone hPL , hCG

Test : Previous Year - 1 - Question 16
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Select the correct route for the passage of sperms in male frogs   -   (NEET-2017)
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In frog urogenital tract have opening called Cloaca

Test : Previous Year - 1 - Question 17
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Which of the following hormones can play a significant role in osteoporosis ?
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Estrogen level decrease at menopause

Test : Previous Year - 1 - Question 18
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Hormones secreted by the placenta to maintain pregnancy are  - (AIPMT- 2017)
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Placenta in terminal stage act as glands

Test : Previous Year - 1 - Question 19
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The amnion of mammalian embryo is derived from  -   (AIPMT -2018)
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Amnion derive from  ectoderm and mesoderm

Test : Previous Year - 1 - Question 20
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The difference between spermiogenesis and spermiation is   (AIPMT- 2018)
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NCERT- page 47 -The spermatids are transformed into spermatozoa (sperms) by the process called spermiogenesis. After spermiogenesis, sperm heads become embedded in the Sertoli cells, and are finally released from the seminiferous tubules by the process called spermiation.

Test : Previous Year - 1 - Question 21
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Extrusion of second polar body from egg nucleus occurs      (NEET 2019)  
Detailed Solution for Test : Previous Year - 1 - Question 21

Second polar body form After fertilization

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