female repro- gynocium🍌🐞 Flashcards
(25 cards)
megasporopphyll
carpel
the ovules are also c/as
integumented megasporangia
megasporangia are borne on cushion like tissue c/as placenta
placenta in ovarian cavity
the placenta is located
inside the ovarian cavity
arising from the placenta are
meegasporangiaum commonly c/as ovules
the no. of ovules in a ovary =1
wheat, paddy , mango
the no. of ovules in a ovary= 2 or more
papaya watermelon rochids
apocarpous gynocium—– free
rose
lotus
michelia
sync. gynocium —— fused
papaver
hibiscus
megasporangium
ovule
each ovule is attached to placenta by
means of a thin stalk c/as unicle
body of ovule fuses w/ funicle in the region is c/as
hilum
hilum is a junction b/w
ovule and funicle
main region of ovule is composed of mass
of paarenchymatous cells—-having abundunt food reserve which is c/as nucellus
main of part of ovule
nucellus
located in nucellus is the
embryosac or female gametophyte
the nucellus is covered by 1/ 2 coats or protective envelope c/as
integuments
in ovule of most plants funicle is sttached to main body for some distance to form a ridge like structure
raphae
vascular tissues are +nt inside the funiculus which
supply food material from material from placenta to body of ovule
opposite the micropylar end is c/as
chalaza—— repsenting the basal part of ovule
occasionally in some seeds such as_________ remnants of nuellus r also persistant c/as____________
balck pepper
beet
castor
perisperm
some filaments are attached w/ funicle [ some times w/ placenta] c/as
obturators
the function of obturators is
to guide the passage of pollen of pollen tube towards the micropyle inside the ovary
SPECIAL INTEGUMENTS
ARIL— its the 3rd type of integument ; the funnicle at the base of ovue
LITCHI
MYRISTICA
ASPHODELUS
