explain photosynthesis

plants and photosynthesisGreen plants make their own food
photosynthesis in green plants
what is light reactions and dark reactions
The internal structure of a leaf
What conditions are needed for photosynthesis
The chloroplast
CO2 for photosynthesis
Sunlight for photosynthesis
Water and photosynthesis
The root structure

OTHER LESSONS
Asexual Reproduction
Clouds
Charact' of Living Things
Ecosystems
Electricity

Energy
Forces
Genetics

Needs of Living Things
Nutrients in Food
Rock Cycle
Simple Machines
Soils
States of Matter
Symbiosis
The Five Senses
Water Cycle
Winds

light and photosynthesis

 

Water for Photosynthesis

Plants get the water they need for photosynthesis through their roots. The roots have a type of cell called a root hair cell - these project out from the root into the soil. Roots have a big surface area and thin walls, which allow water to pass through them easily.

turgid and flaccid plant cell

NOTES
Root cells do not contain chloroplasts, as they are normally in the dark and cannot photosynthesise.

Plants need water for other important things such as:
water is needed for photosynthesisprovide dissolved minerals that keep the plants healthy
water is needed for photosynthesisprovide a medium for transporting minerals
water is needed for photosynthesiskeep the plant firm and upright
water is needed for photosynthesiskeep the plant cool and hydrated
water is needed for photosynthesisallow other chemical reactions to occur in plant cells

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green plants make their own food