explain photosynthesis ESchooltoday Home, All Lessons
 

 

OTHER LESSONS Wins Forces Energy Genetics reproduction Ecosystems
Asexual Reproduction
Clouds
Charact' of Living Things
Ecosystems
Elements, mixtures and compounds
Electricity

Energy
Forces
Genetics

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

Photosynthesis Energy Genetics reproduction Ecosystems

light and photosynthesis

 

Light for photosynthesis

A leaf usually has a large surface area, so that it can absorb a lot of light. Its top surface is protected from water loss, disease and weather damage by a waxy layer. The upper part of the leaf is where the light falls, and it contains a type of cell called a palisade cell. This is adapted to absorb a lot of light. It has lots of chloroplasts.
light for photosynthesis

In light-dependent reactions (as explained in light and dark reactions), photosynthesis increases with more light. More chlorophyll molecules are ionised and more ATP and NADPH are generated as more light photons are focussed on a green leaf. Even though light is extremely important in light-dependent reactions, it is important to note that excessive light can damage chlorophyll and photosynthesis can reduce.

Light-dependant reactions do not rely too much on temperature, water or carbon dioxide, even though they are all necessary for the process to complete. This means cold or hot, the reactions will occur as long as there is enough light.


backnext

green plants make their own food



SEE OTHER REVISION LESSONS AVAILABLE ON ESCHOOLTODAY
DROUGHTS | EARTHQUAKES | FLOODING | HURRICANES | LANDSLIDES | TORNADOES | VOLCANOES | WILD FIRES | WINDS
AQUACULTURE
| CLIMATE CHANGE | ECOSYSTEMS | EARTH SYSTEM | FOOD WASTE | FORESTS PRESERVATION
GENETIC ENGINEERING | LANDFORMS | OCEAN ACIDIFICATION | OVERFISHING | OZONE DEPLETION
POLLUTION | ENERGY | WASTE WATER | WATER SCARCITY | WASTE AND RECYCLING

Copyright © 2008-2017 eSchooltoday in association with BusinessGhana.com.
All Rights Reserved.