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 following columns and select the correct option.

Column-I Column-II
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. (ii) (iv) (i) (ii)

Subtopic:  Male Reproductive System | Ovary | Embryonic Development till Gastrulation |
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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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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

Options: (a) (b) (c) (d)
1. (iv) (iii) (ii) (i)
2. (i) (ii) (iii) (iv)
3. (i) (iii) (ii) (iv)
4. (ii) (i) (iv) (iii)
Subtopic:  Seminiferous Tubules & Spermatogenesis | Ovary | Menstrual Cycle: Luteal Phase | Fetal Development & Parturition |
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No new follicles develop in the luteal phase of the menstrual cycle because :

1.  Follicles do not remain in the ovary after ovulation
2.  FSH levels are high in the luteal phase
3.  LH levels are high in the luteal phase
4.  Both FSH and LH levels are low in the luteal phase
Subtopic:  Menstrual Cycle: Luteal Phase |
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Identify the human development stage shown below as well as the related right place of its occurrence in a normal pregnant woman and select the right option for the two together -

Developmental stage Site of occurrence
1. Blastula End part of Fallopian tube
2. Blastocyst Uterine wall
3. 8-celled morula Starting point of Fallopian tube
4. Late morula      Middle part of Fallopian tube

                                

 

Subtopic:  Embryonic Development till Gastrulation |
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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 these is not an important component of initiation of parturition in humans? 

1. Release of oxytocin

2. Release of prolactin

3. Increase in estrogen and progesterone ratio

4. Synthesis of prostaglandins

Subtopic:  Fetal Development & Parturition |
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