Eye lens is formed from
ectoderm
mesoderm
endoderm
ectoderni and mesoderm
Egg is liberated from ovary in
secondary oocyte stage
primary oocyte stage
oogonial stage
mature ovum stage
Amount of yolk and its distribution are changed in the egg. Which one is affected?
pattern of cleavage
formation of zygote
number of blastomeres
fertilization
Gonads develop from embryonic
both mesoderm and endoderm
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
Fertilizins are emitted by
immature eggs
mature eggs
sperms
polar bodies
Freshly released human egg has
one Y-chromosome
one X-chromosome
two X-chromosome
one X-chromosome and one Y-chromosome
Male hormone is produced in the testis by cells of
sertoli
epithelial
spermatocytes
leydig
Extrusion of second polar body from egg nucleus occurs
after entry of sperm before completion of fertilization
after completion of fertilization
before entry of sperm
without any relation of sperm entry
Blastopore is
opening of neural tube
opening of gastrocoel
future anterior end of embryo
found in blastula