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Flowers and Reproduction (Life cycle in plants (gamates (sperm, egg),…
Flowers and Reproduction
concepts
seeds
producing offspring
genetically different offspring
Asexual Reproduction
fragmentation
adventitous roots
large spreading
self- sufficient
Sexual Reproduction
Gametophyte(haploid plant)
Microgamate
pollen tube
vegetative cell
generative cell
Megagamate
embryo sac
central cell
polar nuclei
antipodal cell
synergids
fertilization
endosperm
nourishes embryo and seedling
endosperm nucleus
plasmogamy
karyogamy
double fertilization
fertilizes with egg and polar nuclei
reproductive organs and flower strucure
female reproductive part
carpel
stigma
transferred to pollen grains
style
ovary
contains ovule
develops fruit
placentae
gynoecium
megaspore mother cells
Male Reproductive part
stamen
made of
filament
anther
microspore mother cells
androecium
pollen
pedicel
stalk of indicidual flower
complete flowers
incomplete flowers
Petals
cotolla
perianth
attracts pollinators
sepals
protection
Life cycle in plants
heteromorphic generations
alternations of generations
megaspores
microspores
megagametophyte
microgametophyte
megamgamates
microgamates
syngamy
spore
sporophyte
zygote
gamates
sperm
egg
pollination
cross
different alllele
self
same allele
stamen and style maturation times
immature stigma tissues
pollen only lives briefly
stigma and pollen incompatibility
compatibility barriers
Monoecious and dicecious species
perfect flower
has both stamens and carpels
essential organs
imperfect flower
lacks both stamen and carpel
non essential organs
dioecy
monoecy
Animal pollinated flowers
zygomorphic
coevlution
regular
actinomorphic
wind pollinated flowers
little chance of pollination
produces large amount of pollen
Inflorescence and pollination
determinate
indeterminate
