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REPRODUCTION in
Flowering Plants
I. FLOWERS

Are the organs of reproduction in anthrophytes
(flowering plants)
PARTS of the flower
include:

Sepals: enclose the flower bud and protect it
until it opens

Petals: attract pollinators
More flower parts
Pistil: female reproductive organ; ovules
contain the female gametophyte generation,
located inside the ovary at the base of the pistil

Stamen: male reproductive organ, pollen
grains contain male gametes and form inside
the anther
II. POLLINATION
A. Anther splits open when the pollen are
mature
 B. Pollen are carried to the stigma by wind,
water, or animals. THIS is pollination
 C. Plant reproduction is most successful when
pollination rates are high
Pollination is part of  D. Sexual reproduction, which results in
greater genetic diversity (good for the species
survival)

III. FERTILIZATION




A. Pollen is carried to the stigma in pollination
B. A pollen grain grows a tube down the style
to the ovary
C. Two sperm travel down the tube
D. In a process called double fertilization, one
of the sperm fertilizes the egg and the other
unites with the central cell, forming an
endosperm (which becomes food storage
tissue)
FERTILIZATION

IS THE UNITING OF THE SPERM AND EGG
NUCLEI, CREATING A ZYGOTE.
IV. FRUITS AND SEEDS
A. Following fertilization, the ovary develops
into a fruit with seeds inside, while the rest of
the flower dies
 B. Fruits help protect the seeds until they
mature and help scatter seeds into new
habitats
-Fruits are the part of the plant that contains
seeds: cucumbers, maple “helicopters”, green
peppers, squash are all fruits.

FRUITS AND SEEDS, cont’d
C. One or two cotyledons forms, which form
leaves that will be used by the germinating
seedling
D. Food is derived from the endosperm
E. Thus, the seed is an undeveloped plant
embryo with stored food and protective coats

V. GERMINATION


A. At maturity, seed coat dries and hardens,
enabling it to survive harsh conditions
B. Once conditions are favorable, seed
germinates (develops into an embryo) and
grows into a new plant.