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