Termination of gastrulation is indicated by
obliteration of blastocoel
obliteration of archenteron
closure of blastopore
closure of neural tube
Gonads develop from embryonic
ectoderm
endoderm
mesoderm
both mesoderm and endoderm
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
Eye lens is formed from
ectoderni and mesoderm
Freshly released human egg has
one Y-chromosome
one X-chromosome
two X-chromosome
one X-chromosome and one Y-chromosome
Fertilizins are emitted by
immature eggs
mature eggs
sperms
polar bodies
Acrosome reaction in sperm is triggered by
capacitation
release of lysin
influx of Na+
release of fertilizing
Meroblastic cleavage is a division which is
horizontal
partial/parietal
total
spiral
How many sperms are formed from a secondary spermatocyte?
4
8
2
1
In telolecithal egg the yolk is found
all over the egg
on one side
both the sides
centre
