epiboly
emboly
both and
delamination
C. both and
holoblastic
meroblastic
diploblastic
triploblastic
paedogamy
autogamy
isogamy
anisogamy
spermatogenesis
oogenesis
spermiogenesis
gametogenesis
zygote of frog
brain of rabbit
eye of frog
retina of cockroach
parthenogenesis
parthenocarpy
polyembryony
paedogenesis
ovulation
fertilization
implantation
entry of sperms into vagina
Frog
Housefly
Hydra
Mosquito
ectoderm
endoderm
mesoderm
ecto and mesoderm
ectoderm
meso derm
somatic mesoderm and endoderm
splanchnic mesoderm and ectoderm
Spider
Crow
Honeybee
Earthworm
epiboly
emboly
both and
delamination
neurulation
tubulation
crania tion
none of these
primary oocyte
secodnary oocyte
ootid
gonocyte
primary oocyte stage
secondary oocyte stage
ootid stage
matured ova stage
fertilized egg
spermatozoa
unfertilized egg
egg membranes
direct ontogenic development
indirect ontogenic development
chordates
embryogenesis in mammals
man
hen's egg
frog
rabbit
sperms of same species are essential
sperms do not need penetration
sperms of any animal can fertilize
only presence of male is sufficient
birds
mammals
insects
molluscs
a cord between mother and foetus
place of attachment in uterus wall where exchange of material between mother and foetus takes place
outer covering of foetus
allantoic part of the uterus
spermiation
spermiogenesis
spermatogenesis
androgenesis
centrolecithal
microlecithal
mesolecithal
telolecithal
completely disappears during metamorphosis
partialy retained during metamorphosis
partially disappears during later stages of metamorphosis
fully retained in the adult frog
straight
curved
coiled
zig-zag
die immediately
start dividing
will remain undivided
transform into a tadpole at a faster rate
the spermatids differentiate into spermatozoa
primary spermatcyte is tarnsformed into a secondary spermatocyte
spermatogonea complete multiplication phase
secondary spermatocyte extrudes polar bodies
Vasa efferentia, Bidder's canal, uriniferous tubule and nephrotome
Vasa efferentia, Bidder's canal, and uriniferous tubule
Vasa efferentia, uriniferous tubule nd Bidder's canal.
Vasa deferentia, uriniferous tubule and Bidder's canal
histogenesis
paedogenesis
histolysis
paedomorphosis
ovulation
oogenesis
vitellogenesis
folliculogenesis
disappearance of tail
food habit becoming carnivore
land habit
excretion beocmes mesonephric