Plants and water
Plants and water SLOs
Describe the process of transpiration
 Explain the function of xylem and
phloem tubes in plants
 Describe the process of diffusion and
osmosis

Photosynthesis Review
1.
2.
3.
“Photo” means: Light
“synthesis” means: To make/put together
Photosynthesis is a process where:
Plants make food using the energy from sunlight
4.
The equation for photosynthesis is:
Sunlight
Carbon dioxide + water  food (glucose) + energy
5.
Living
All __________
things undergo
respiration, which is the same/opposite
(circle one) to photosynthesis
Transport in plants
Plants use water to carry
substances from one part to
another.
Plants do not have blood or
hearts to pump it!
The vascular system of plants
 There
are two types of tubes in
plants:
Xylem: tubes that carries water
(and minerals) upwards
Phloem: tubes that carries food
(glucose) up AND down the
plant
Transpiration
Water comes in
through the roots and
moves up through
the xylem. Water is
lost by evaporation in
the leaves
(like a straw)
Read P81 in NMS1 and complete questions
4-5 (draw a nice BIG diagram + labels
showing the movement of water in
trees/plants)
Osmosis
powers the
movement of
water in plants
– as water
escapes the
leaves it is
replaced by
water moving
up the stem
from the roots
Osmosis causes transpiration
Water escapes
the leaves by
evaporation
Water moves up
the stem to
replace the water
lost in the leaves
it is drawn up by
the transpiration
stream
Water moves
into the root
cells by osmosis
because there is
more water in
the soil than in
the root cells