meeting the needs. plants can’t eat… …what do they release energy from?
TRANSCRIPT
Meeting the Needs
Plants can’t eat……what do they release energy from?
Photosynthesis
Water + Carbon dioxide Oxygen + Glucose sunlight
How do plants absorb light?
Chlorophyll in chloroplasts
Which colour of light do plants absorb?
Plants absorb blue and red light
How do plants take in, and
transport, water?
Water enters roots by osmosis.
Water is transported in xylem vessels
Xylem vessels carry water throughout the
plant, from root to leaf.
They work just like our circulatory system.
Place your piece of celery in a small beaker of food colouring.
Place your white flower in a test tube of food colouring.
How does water get from roots to leaves?
How do plants take in carbon
dioxide and release oxygen?
Gases enter and exits leaves
through pores called stomata.
Stomata
Where are the stomata on lily pads?
View Stomata by taking a print of a leaf using clear nail varnish and then make a slide to view under
the microscope
What happens to the glucose made
by photosynthesis?
Used immediately for energy
Used immediately for energy
Stored as Starch
Stored as Starch
Used as building material
Used as building material
Cellulose in cell walls.
Food store in tuber.
Fruit production.
Stored as Starch
Test a leaf for Starch
How is glucose transported
around plants?
Glucose (food) is transported in
phloem vessels.
Phloem vessels are made of living
cells.
Absorbed by the
chemical chlorophyll
found in chloroplasts.
Is used by the plant or exits through the
stomata.
Enters through
the stomata.
How does water get from root to leaf?
Cuticle: stops water lossEpidermis: protects leaf
Pallisade mesophyll: cells close together with lots of chloroplasts to absorb light
Spongy mesophyll: cells are spread out to let gases move easily inside the leaf
Stomata: lets gases in and out of leaf
Leaf Cross Section
Song:http://www.youtube.com/watch?v=C1_uez5WX1o
Photosynthesis:http://www.bbc.co.uk/scotland/learning/bitesize/standard/biology/world_of_plants/making_food_rev4.shtml