Which of these is not an important component of initiation of parturition in humans?
1. Increase in oestrogen and progesterone ratio
2. Synthesis of prostaglandins
3. Release of oxytocin
4. Release of prolactin

Subtopic:  Fetal Development & Parturition |
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Receptors for sperm binding in mammals are present on:

1. Perivitelline space 

2. Zona pellucida

3. Corona radiata

4. Vitelline membrane

Subtopic:  Fertilization |
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Which of the following secretes the hormone, relaxin, during the later phase of pregnancy?

1. Foetus 

2. Uterus

3. Graafian follicle

4. Corpus luteum

Subtopic:  Fetal Development & Parturition |
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Meiotic division of the secondary oocyte is completed:

(1) At the time of copulation

(2) After zygote formation

(3) At the time of fusion of a sperm with an ovum

(4) Prior to ovulation

Subtopic:  Fertilization: Part 1 | Fertilization |
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Which of the following hormone levels will cause release of ovum (ovulation) from the graffian follicle?

1. High concentration of Progesterone

2. Low concentration of LH

3. Low concentration of FSH

4. High concentration of Estrogen

Subtopic:  Fertilization: Part 1 | Fertilization |
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Match the follwing columns and select the correct option .

   Column-l                            Column-ll 

(a) Placenta                        (i) Androgens  

(b) Zona pellucida               (ii) Human chroinic Gonadotropin 

(c) Bulbo-urethral glands     (iii) Layer of the ovum 

(d) Leydig cells                    (iv) Lubrication of the Penis 

      a         b         c      d

(1) (i)      (iv)      (ii)    (iii) 

(2) (iii)      (ii)    (iv)     (i) 

(3) (ii)     (iii)      (iv)    (i) 

(4) (iv)     (iii)     (i)      (ii) 

Subtopic:  Male Reproductive System | Ovary | Embryonic Development till Gastrulation |
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In human beings, at the end of 12 weeks (first trimester) of pregnancy, the following is observed:

1. Eyelids and eyelashes are formed

2. Most of the major organ systems are formed

3. The head is covered with fine hair

4. Movement of the fetus 

Subtopic:  Fetal Development & Parturition |
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Select the correct option of haploid cells from the following groups :

1. Primary oocyte, Secondary oocyte, Spermatid

2. Secondary spermatocyte, First polar body, Ovum

3. Spermatogonia, Primary spermatocyte, Spermatid

4. Primary spermatocyte, Secondary spermatocyte, Second polar body

Subtopic:  Seminiferous Tubules & Spermatogenesis | Ovary |
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Match the following columns and select the correct option :

      Column - I       Column - II

(a) Ovary                 (i) Human chorionic Gonadotropin

(b) Placenta             (ii) Estrogen & Progesterone

(c) Corpus luteum     (iii) Androgens

(d) Leydig cells         (iv) Progesterone only

1. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)

2. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)

3. (a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)

4. (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)

Subtopic:  Seminiferous Tubules & Spermatogenesis | Ovary | Menstrual Cycle: Luteal Phase | Fetal Development & Parturition |
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Extrusion of second polar body from egg nucleus occurs:

1. simultaneously with first cleavage

2. after entry of sperm but before fertilization

3. after fertilization

4. before entry of sprm into ovum

Subtopic:  Fertilization: Part 1 | Fertilization |
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