Biology Today — May 2017

10. Consider the following statements and select the option
    stating which ones are true (T) and which ones are false (F).
    (i) Cessation of menstrual cycle in women is called menopause.
    (ii) Menstrual cycle is controlled by pituitary as well as
    ovarian hormones.
    (iii) Oogenesis begins in childhood and gets completed
    after fertilisation.
    (iv) Oogenesis is controlled by the pituitary hormones only.
    (i) (ii) (iii) (iv)
    (a) T F T F
    (b) T T F T
    (c) F F T T
    (d) T T F F


11. Choose the incorrectly matched pair.
    (a) Bartholin’s gland - Either side of urethral opening
    (b) Areola - Pigmented area around the nipple
    (c) Mammary ampullae - May store milk
    (d) Glands of Skene - Homologous to male prostate


12. Given flow chart represents the events occurred at the
    attainment of puberty in human female.

Identify the hormones X and Y.

Pituitary gland

Development of ovary

Development of secondary sexual characters

Y

X

(a) X - Gonadotropin releasing hormone, Y - Progesterone

(b) X - Growth hormone, Y - Gonadotropic hormone

(c) X - Follicle stimulating hormone,

Y - Luteinising hormone

(d) X - Follicle stimulating hormone, Y - Estrogen

13. Identify the correct statement.
    (a) Follicular antrum is present in the secondary follicle.
    (b) Corona radiata is formed of modified granulosa cells.
    (c) Degeneration of ovarian follicles is called ovarian atresia.
    (d) The outermost covering of a mature Graafian follicle is
    cumulus oophoricus.


14. The thick layer of uterus wall involved in strong uterine
    movements during parturition is
    (a) perimetrium (b) myometrium
    (c) endometrium (d) both (b) and (c).


15. Read the following statements and select the incorrect one.
    (a) Graafian follicle contains granulosa cells which secrete
    estrogen.
    (b) Corpus luteum is formed by the germinal epithelium of
    the ovary.

(c) Endometrium layer of uterus undergoes cyclic changes

during menstrual cycle.

(d) Both (b) and (c).

Exam Section

1. Changes in GnRH pulse frequency in females is controlled
   by circulating levels of
   (a) progesterone only (b) progesterone and inhibin
   (c) estrogen and progesterone
   (d) estrogen and inhibin. (NEET Phase-I 2016)


2. What is the inner lining of the uterus called?
   (a) Cervix (b) Oviduct
   (c) Endometrium (d) Fimbriae (J & K 2015)


3. Which of the following events is not associated with
   ovulation in human female?
   (a) Release of secondary oocyte
   (b) LH surge
   (c) Decrease in estradiol
   (d) Full development of Graafian follicle (AIPMT 2015)


4. The part of Fallopian tube closest to the ovary is
   (a) infundibulum (b) isthmus
   (c) ampulla (d) cervix. (J & K 2015)


5. The main function of mammalian corpus luteum is to
   produce
   (a) estrogen only (b) progesterone
   (c) human chorionic gonadotropin
   (d) relaxin only. (AIPMT 2014)


6. The figure shows a section of human ovary. Select the option
   which gives the correct identification of either A or B with
   function/characteristic.
   A

B

(a) B- Corpus luteum - Secretes progesterone

(b) A- Tertiary follicle - Forms Graafian follicle

(c) B- Corpus luteum - Secretes estrogen

(d) A- Primary oocyte - It is in the prophase-I of the meiotic

division (NEET - Karnataka 2013)

7. The secretory phase in the human menstrual cycle is also called
   (a) luteal phase and lasts for about 6 days
   (b) follicular phase and lasts for about 6 days
   (c) luteal phase and lasts for about 13 days
   (d) follicular phase and lasts for about 13 days.
   (AIPMT Mains 2012)