disappearance of tail
food habit becoming carnivore
land habit
excretion beocmes mesonephric
A. disappearance of tail
parthenogenesis
parthenocarpy
polyembryony
paedogenesis
birds
mammals
insects
molluscs
Proteins
Nucleoplasm
DNA
RNA
ovulation
fertilization
implantation
entry of sperms into vagina
paedogamy
autogamy
isogamy
anisogamy
4-5 years
6-8 years
8 - 10 years
12 -14 years
mammals
lizards
fowls
earwigs
foregut
midgut
hindgut
somatopleure
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
one cell
100 cells
1000 cells
10000 cells
spermiation
spermiogenesis
spermatogenesis
androgenesis
copulation
amphimixis
syngamy
amplexus
Spider
Crow
Honeybee
Earthworm
Spinal cord and brain
Liver and heart
Eye and skin
Notochord and vertebral colum.
primary oocyte stage
secondary oocyte stage
ootid stage
matured ova stage
holoblastic
meroblastic
diploblastic
triploblastic
epiboly
emboly
morphogenetic movements
involution
primary oocyte
secodnary oocyte
ootid
gonocyte
spermatogenesis
oogenesis
spermiogenesis
gametogenesis
ectoderm
meso derm
somatic mesoderm and endoderm
splanchnic mesoderm and ectoderm
3
8
4
12
ovulation
oogenesis
vitellogenesis
folliculogenesis
ova
sperm
both and
primary spermatogonia
the spermatids differentiate into spermatozoa
primary spermatcyte is tarnsformed into a secondary spermatocyte
spermatogonea complete multiplication phase
secondary spermatocyte extrudes polar bodies
histogenesis
paedogenesis
histolysis
paedomorphosis
Frog
Housefly
Hydra
Mosquito
folliculogenesis
oogenesis
vitellogenesis
spermiogenesis
zygote of frog
brain of rabbit
eye of frog
retina of cockroach
straight
curved
coiled
zig-zag
early blastula
late blastula
early gastrula
lategastrula