centrolecithal
microlecithal
mesolecithal
telolecithal
B. microlecithal
primary oocyte
secodnary oocyte
ootid
gonocyte
ovulation
oogenesis
vitellogenesis
folliculogenesis
zygote of frog
brain of rabbit
eye of frog
retina of cockroach
sperms of same species are essential
sperms do not need penetration
sperms of any animal can fertilize
only presence of male is sufficient
ectoderm
meso derm
somatic mesoderm and endoderm
splanchnic mesoderm and ectoderm
epiboly
emboly
both and
delamination
vitellogenesis
oogenesis
spermatogenesis
fertilization
direct ontogenic development
indirect ontogenic development
chordates
embryogenesis in mammals
neurulation
tubulation
crania tion
none of these
spermatogenesis
oogenesis
spermiogenesis
gametogenesis
Spider
Crow
Honeybee
Earthworm
die immediately
start dividing
will remain undivided
transform into a tadpole at a faster rate
paedogamy
autogamy
isogamy
anisogamy
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
disappearance of tail
food habit becoming carnivore
land habit
excretion beocmes mesonephric
ovulation
fertilization
implantation
entry of sperms into vagina
3
8
4
12
spermiation
spermiogenesis
spermatogenesis
androgenesis
Frog
Housefly
Hydra
Mosquito
birds
mammals
insects
molluscs
the spermatids differentiate into spermatozoa
primary spermatcyte is tarnsformed into a secondary spermatocyte
spermatogonea complete multiplication phase
secondary spermatocyte extrudes polar bodies
completely disappears during metamorphosis
partialy retained during metamorphosis
partially disappears during later stages of metamorphosis
fully retained in the adult frog
foregut
midgut
hindgut
somatopleure
folliculogenesis
oogenesis
vitellogenesis
spermiogenesis
mammals
lizards
fowls
earwigs
4-5 years
6-8 years
8 - 10 years
12 -14 years
epiboly
emboly
morphogenetic movements
involution
holoblastic
meroblastic
diploblastic
triploblastic
man
hen's egg
frog
rabbit
primary oocyte stage
secondary oocyte stage
ootid stage
matured ova stage