Save
biology
plant organisation
Save
Share
Learn
Content
Leaderboard
Learn
Created by
a
Visit profile
Cards (25)
describe leaf
organ
describe function of leaf
site of
photosynthesis
give plant tissues of leaf
epidermal
,
palisade mesophyll
, spongy mesophyll,
xylem
and
phloem
describe epidermal tissue
found in upper and
lower
epidermis
describe adaptations of upper epidermal
transparent
- let
light
through for
photosynthesis
describe adaptations of palisade mesophyll
lots of
chloroplasts
- maximise
photosynthesis
describe adaptations of spongy mesophyll
lots of
air
gaps - allow gases to diffuse through to
palisade
mesophyll
describe adaptations of lower epidermis
stomata
and
guard
cells - control
gas exchange
and
water loss
describe function of stomata
gaps
to allow
diffusion
of gases (
carbon dioxide
for
photosynthesis
)
describe function of guard cells
control
opening
and
closing
of
stomata
due to
environmental
conditions
give environmental conditions affect guard cells
water
availability and
light
intensity
describe affect of water availability on guard cells
low -
flaccid
and
close
stomata
high -
turgid
and
open
stomata
describe affect of light intensity on guard cells
low
-
closed
stomata
high
-
open
stomata
describe function of phloem
transport
dissolved sugars
from
leaves
to rest of
plant
give adaptations of phloem
elongated
living
cells,
pores
in end walls and
both
direction flow
describe translocation
transport of
dissolved sugars
from
leaf
to rest of
plant
describe function of xylem
transport
water
and
mineral ions
from
roots
to
stems
and
leaves
give adaptations of xylem
dead
cells, join end to end to form
hollow
tube, strengthened by
lignin
and
one
direction flow
describe transpiration
evaporation
of
water
from plant surface
describe transpiration stream
movement of
water
from
roots
to
leaves
give factors affecting transpiration
temperature
,
light
intensity,
air
movement and
humidity
describe affect of temperature on transpiration
high -
increase
rate
low -
decrease
rate
describe affect of light intensity on transpiration
low -
decrease
rate
high -
increase
rate
describe affect of air movement on transpiration
low -
decrease
rate
high -
increase
rate
describe affect of humidity on transpiration
low -
increase
rate
high -
decrease
rate