17947.A cross section at the midpoint of middle piece of human sperm will show
Centriole, mitochondria and 9 + 2 arrangement of microtubules
Centriole and mitochondria
Mitochondria and 9 + 2 arrangement of microtubules
9 + 2 arrangement of microtubules only
17949.Estrus cycle is found in
Primates only
Anthropoids only
All mammals except apes and man
none of the above
17950.Estrogen level is maximum in which part of ovarian cycle
Secretory phase
Ovulatory phase
Proliferative phase
Menstrual phase
17951.During gastrulation size of embryo remains constant but metabolic rate
increases
decreases
is unchanged
none of the above
17952.During cleavage, what is true about cells?
Nucleocytoplasmic ratio remains unchanged
Size does not increase
There is less consumption of oxygen
The division is like meiosis
17953.During cleavage
size of resulting cells decreases
Size of resulting cells increases
Size of early embryo increases
Size of early embryo decreases