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
A.
Sperm is viable for only up to 24 hours
Sperms are viable for 24 h to 48 h , whereas the human ovum is viable only for 24 h.
Cycas and Adiantum resemble each other in having
seeds
motile sperms
cambium
cambium
Which one of the following events in not associated with ovulation in human female?
Decrease in oestradiol
Full development of Graafian follicle
Release of secondary oocyte
Release of secondary oocyte
Which of the following layers in an antral follicle is acellular?
Granulosa
Theca interna
Stroma
Stroma
Which one of the following is wrong about Chara?
upper oogonium and lower round antheridium
Globule and nucule present on the same plant
Upper antheridium and lower oogonium
Upper antheridium and lower oogonium
