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Photosynthesis Definitions
 

Here are some of the key words used in photosynthesis and their meanings to help you understand what it all means

Carbon cycle - is the process by which carbon moves between the living and non-living world in a cycle flow.

Photosynthesis - is the process by which plants make carbohydrate from carbon dioxide and water, using sunlight energy.

Respiration - is the process by which living things release energy from carbohydrates, as well as producing water and carbon dioxide.

Chlorophyll - is the green substance found in chloroplasts, this is where light energy is trapped for photosynthesis.

Leaf - is the plant organ specialized for photosynthesis.

 
 

Palisade layer - is a layer of tall columnar cells containing chloroplasts, this is where the majority of photosynthesis takes place in a leaf.

Stomata - are the pores on the surface of a leaf that allows water, carbon dioxide and oxygen to move in and out of the leaves.

Phloem - is the plant tissue made up of living cells that has the function of transporting food substances through the plant.

Xylem - is a compound plant tissue that helps provide support and conducts water and nutrients upwards from the roots.

Transpiration - is the process of water through the xylem of the plant, from the roots up to the leaves where it changes to vapor and is released to the atmosphere. (see experiment Plant Water Loss)

Transpiration stream - is the uninterrupted flow of water through the xylem of the plant, from the roots up to the leaves where it will evaporate.

Limiting factor - carbon dioxide level, temperature and/or light intensity affects the rate of photosynthesis, if it is in short supply it affects plant growth. By increasing these limiting factors it will increase the rate of photosynthesis and plant growth.

Rate of photosynthesis - is how quickly a plant is photosynthesising. Factors such as carbon dioxide levels, temperature and/or light intensity affects the rate of photosynthesis.

 
 
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