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SEXUAL REPRODUCTION IN FLOWERING PLANTS - Coggle Diagram
SEXUAL REPRODUCTION IN
FLOWERING PLANTS
STRUCTURE OF
FLOWER
STAMEN
(Male reproductive organ)
Anther
Filament
(Produce pollen grain)
CARPEL
(Female reproductive organ)
Style
Ovary
Stigma
Ovule
(Produce embryo sac)
DEVELOPMENT OF
GAMETES
POLLEN GRAIN
(produced in anther)
Microspore mother
cell
Meiosis
4 Microspore cells
Nucleus undergoes
mitosis
Pollen grain with
2 nuclei
EMBRYO SAC
(produced in ovule)
Megaspore mother
cell
Meiosis
4 Megaspore cells
(3 develops, 1 degenerates)
Nucleus undergoes
mitosis 3 times
Embryo sac cell
with 8 nuclei
POLLINATION &
FERTILISATION
Development of
pollen tube
Inside style
Double fertilisation
Involve two male gametes
Pollination
Process which pollen grain are transferred
from the anther to the stigma
IMPORTANCE OF SEEDS
FOR SURVIVAL
Cotyledon act as source of
nutrient to supply energy while
germination
Can form as dormant structure
Contain embryo that germinate
to form seedlings
DEVELOPMENT OF
SEEDS AND FRUITS
Relation of structure of
seeds to ovules
Relation of structure of
fruits to ovaries