How many sperms are formed by four primary spermatocytes
1
4
16
32
C.
16
Spermatogenesis is the formation of sperm from a germ cell. Four spermatozoa are produced from a primary spermatocyte, therefore, 16 spermatozoa will be formed from four primary spermatocytes.
The enzyme responsible for atmospheric nitrogen fixation is
nitrogenase
hydrogenase
oxygenase
carboxylase
0n high mountains, difficulty in breathing is due to
decrease in partial pressure of O2
decrease in amount of O2
increase in CO2 concentration
all of the above
Convergent Evolution' is shown by
homologous organs
analogous organs
vestigial organs
all of the above