Spinal cord and brain
Liver and heart
Eye and skin
Notochord and vertebral colum.
A. Spinal cord and brain
man
hen's egg
frog
rabbit
ova
sperm
both and
primary spermatogonia
folliculogenesis
oogenesis
vitellogenesis
spermiogenesis
ectoderm
endoderm
mesoderm
ecto and mesoderm
mammals
lizards
fowls
earwigs
zygote of frog
brain of rabbit
eye of frog
retina of cockroach
monoecious
dioecius
intersexual
hermaphrodites
holoblastic
meroblastic
diploblastic
triploblastic
4-5 years
6-8 years
8 - 10 years
12 -14 years
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
epiboly
emboly
both and
delamination
neurulation
tubulation
crania tion
none of these
fertilized egg
spermatozoa
unfertilized egg
egg membranes
straight
curved
coiled
zig-zag
direct ontogenic development
indirect ontogenic development
chordates
embryogenesis in mammals
enlarges in size
decreases in size
retains the same size at the beginning
gradually enlarges in size
ovuation
placentation
gestation
parturition
primary oocyte
secodnary oocyte
ootid
gonocyte
sperms of same species are essential
sperms do not need penetration
sperms of any animal can fertilize
only presence of male is sufficient
paedogamy
autogamy
isogamy
anisogamy
die immediately
start dividing
will remain undivided
transform into a tadpole at a faster rate
epiboly
emboly
morphogenetic movements
involution
endoderm
mesoderm
ectoderm
chordomesoderm
spermatogenesis
oogenesis
spermiogenesis
gametogenesis
parthenogenesis
parthenocarpy
polyembryony
paedogenesis
foregut
midgut
hindgut
somatopleure
centrolecithal
microlecithal
mesolecithal
telolecithal
birds
mammals
insects
molluscs
vitellogenesis
oogenesis
spermatogenesis
fertilization
one cell
100 cells
1000 cells
10000 cells