Which one of the following statements is false in respect of viability of mammalian sperm ?

• Sperm is viable for only up to 24 hours

• Survival of sperm depends on the pH of the medium and is more active in alkaline medium

• Viability of sperm is determined by its motility

• Viability of sperm is determined by its motility

Cycas and Adiantum resemble each other in having 

• seeds

• motile sperms

• cambium

• cambium

Signals for parturition originate from

• both placenta as well as fully developed foetus

• oxytocin released from maternal pituitary

• placenta only

• placenta only

In a normal pregnant woman, the amount of total gonadotropin activity was assessed. The result expected was

• High level of circulating FSH and LH in the uterus to stimulate implantation of the embryo

• High level of circulating HCG to stimulate endometrial thickening

• High levels of FSH and LH in uterus to stimulate endometrial thickening

• High levels of FSH and LH in uterus to stimulate endometrial thickening

The Leydig cells as found in the human body are the secretory source of

• Progesterone

• Intestinal mucus

• Glucagon

• Glucagon

The shared terminal duct of the reproductive and urinary system in the human male is 

• Urethra

• Ureter

• Vas deferens

• Vas deferens

The main function of mammalian corpus luteum is to produce

• estrogen only

• progesterone

• human chorionic gonadotropin

• human chorionic gonadotropin

Select the correct option describing gonadotropin activity in a normal pergnant female

• High level of FSH and LH stimulates the thickening of endometrium

• High level of FSH and LH facilitate implantation of the embryo

• High level of hCG stimulates the synthesis of estrogen and progesterone

• High level of hCG stimulates the synthesis of estrogen and progesterone

19.

Identify the human developmental stage shown below as well as the related right palce of its occurrence in a normal pregnant woman, and select the right option for the two together. 

• Developmental Stage	Site of Occurrence
  Late morula	Middle part of fallopian tube

• Developmental Stage	Site of Occurrence
  Blastula	End part of fallopian tube

• Developmental Stage	Site of Occurrence
  Blastocyst	Uterine wall

• Developmental Stage	Site of Occurrence
  Blastocyst	Uterine wall

The secretory phase in the human menstrual cycle in also called

• luteal phase and lasts for about 6 days

• follicular phase lasting for about 6 days

• luteral phase and lasts for about 13 days

• luteral phase and lasts for about 13 days