Ovulation and Fertilization Practice Questions

Question 1

Arrange the cells according to their positions from the basal layer towards the lumen in the seminiferous tubules:-

1. Spermatogonia
2. Primary spermatocyte
3. Spermatid
4. Spermatozoa

Accepted Answer

1,2,3,4

Answer

2,1,3,4

Answer

1,3,2,4

Answer

4,3,2,1

Question 2

Increased LH secretion just before ovulation is due to

Accepted Answer

Positive feed-back by estrogen

Answer

Positive feed-back by FSH

Answer

Positive feed-back by progesterone

Answer

Positive feed-back by relaxin

Question 3

The mechanism of action of emergency contraception includes the following except:

Accepted Answer

Degeneration of corpus luteum

Answer

Prevention of implantation of fertilized egg.

Answer

Inhibition of fertilization

Answer

By preventing or delaying ovulation

Question 4

By which mechanism do LH and FSH primarily return to baseline levels after ovulation?

Accepted Answer

Negative feedback on gonadotropin-releasing hormone (GnRH) by progesterone

Answer

Negative feedback on GnRH from testosterone

Answer

LH surge

Answer

Negative feedback on GnRH by estradiol

Question 5

What physiological event occurs during ovulation?

Accepted Answer

FSH increases steroid synthesis in granulosa cells.

Answer

Inhibin A levels increase.

Answer

Activin enhances FSH action on granulosa cells.

Answer

Completion of the first meiotic division of the oocyte occurs just before ovulation.

Question 6

Where does meiosis occur in human females?

Accepted Answer

In the adult ovary

Answer

At birth in the ovary

Answer

In the adult testis

Answer

In the prepubertal testis

Question 7

Ovulation occurs how long after the LH surge peak?

Accepted Answer

12-24 hours

Answer

48-72 hours

Answer

72-96 hours

Answer

24-48 hours

Question 8

Ovulation is associated with sudden rise in:

Accepted Answer

LH

Answer

Oxytocin

Answer

Testosterone

Answer

Prolactin

Question 9

All are steps of GIFT, except:

Accepted Answer

Fertilization of oocyte in lab

Answer

Transfer of unfertilized egg into the fallopian tube

Answer

Ovulation stimulation

Answer

Oocyte retrieval

Question 10

In a lady with a regular 28-day menstrual cycle, what is the 'safe period'?

Accepted Answer

First and last seven days

Answer

Initial 14 days

Answer

Later 14 days

Answer

First seven days only

Ovulation and Fertilization — MCQs

Ovulation and Fertilization — MCQs

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