Maturation of sperm before penetration is called
Spermatogenesis
Spermiogenesis
Capacitation
Spermatid
Anti-fertilizin is present on
Egg
Tail
Ovum
Spermatozoa
Select the correct statement.
Cleavage follows gastrulation
Yolk content in egg has no role in cleavage
Cleavage is repeated mitotic division of zygote
Gastrulation and blastulation are followed by each other
Which of the following are secretions produced by the spermatozoa at the time of fertilization ?
Fertilizin and anti-fertilizin
Anii-fertilizen and sperm mysine
Fertilizen and sperm lysine
Only sperm lysine
Which is formed in gastrulation?
Archeenteron
Heart
Brain
None of these
Which of the following groups of cell in the male gonad, represent haploid cells?
Spermatogonial cells
Germinal epithelial cells
Secondary spermatocytes
Primary spermatocytes
If a germ cell in a female gonad and a germ cell in a male gonad begin undergoing meiosis simultaneously, what will be the ratio of ova and sperms produced?
1:1
l : 2
1:4
2:1
Conversion of spermatids into sperm is
Gametogenesis
Metamorphosis
Which of the following structures are derivatives of the endoderm?
Alimentary canal and respiratory structures
Muscles and blood
Excretory and reproductive structures
Skin and nerve cord
Which of the following is not correct for gastrulation ?
Archenteron is formed
All germinal layers are formed
Morphogenetic movements
Some blastomeres and blastocoel degenerate
