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2ND QUARTER
QUIZ 4
ORGAN SYSTEM OF PLANTS
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Absorption
- takes place in the root hair
Root
hair
- also absorb ions or mineral salts from the soil
As water moves from the soil into root hair cells by
osmosis
, pressure inside these cells build.
XYLEM
- carry water and dissolved materials up from the roots
PHLOEM
- carry food and glucose from the leaves to all the other parts of the plant, including the roots
When total water potential is lower outside, the plant
wilts
SYMPLAST
sym - means same/shared
SYMPLAST
- Shared cytoplasm
SYMPLAST
Shared
Cytoplasm
Water and minerals move through
plasmodesmata
PLASMODESMATA
- cell wall chanels that allow response to
systemic
signaling.
APOPLAST
- Outside of the cell
APOPLAST
Water travels through the porous cell walls.
Outside of the cell
a
- means "outside of"
PERFECT
FLOWER
- has both male and female reproductive organs
IMPERFECT
FLOWER
- Has either male or female reproductive organs, but not both
PETALS
- most obvious parts, brightly colored for pollination
PETALS
- modified leaves, provide a platform for insects to
land
RECEPTACLE
- Enlarged end of the flower
Stamen
- male part of the flower
Anther
- pollen sac with pollen grains, produces pollen
grains.
Filament
- holds the anther to disperse pollen
Pollen
Grains
- contains
2
haploid cells, combine through
meiosis
Carpels
- also known as pistil, the female part of the flower.
Stigma
- swollen structure at the end of the style; receives the pollen
Style
- stalk that connects
stigma
to ovary, pathway for
pollen
Ovule
- structure that will develop into a seed, ovum is haploid
Ovule
- attatched to a placenta by the funicle
Funiculus
- equivalent to umbilical cord
Placenta
- provides connection into the ovary walls, provides nutrients to developing embryo
SEPALS
- modified leaves which enclose
ORGANS OF FLOWERING PLANTS:
Petals
Stamen
Carpels
Sepals
Receptacle
MALE ORGANS OF FLOWERS:
Anther
Filament
FEMALE ORGANS OF FLOWER: (Carpels)
Stigma
Style
Ovary
Ovule
Funiculus
Placenta
When total water potential is
higher
outside, the plant is kept
erect.
Pathways of water and mineral movement in the roots:
Symplast
Apoplast
Stigma
- receives the pollen grains
Ovary
- structure that will develop into a fruit after fertilization.
ovary
- produces and protects one or more ovules
Style
- holds the
stigma
in a suitable position to trap pollen grains
The mature
stigma
secretes a sugary fuluid that stimulates the pollen grains to
germiniate.
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