Photosynthesis Flashcards
What cells are used for photosynthesis and what do they contain?
Chloroplasts are used for photosynthesis and they contain Chlorophyll.
What is the use of Chlorophyll?
This is what gives the leaf the colour green.
What is Photosynthesis?
Photosynthesis is the process by which plants, some bacteria and some protistans use the energy from sunlight to produce glucose from carbon dioxide and water. piration. Oxygen is also formed.
What is the glucose from the production of sunlight during photosynthesis,converted too?
This glucose can be converted into pyruvate which releases adenosine triphosphate (ATP) by cellular respiration. Oxygen is also formed.
What limits photosynthesis?
Temperature, carbon dioxide concentration and light intensity are factors that can limit the rate of photosynthesis.
What is photosynthesis used for within a plant?
It is its food source.
What happens during the reaction of photosynthesis?
During this reaction, carbon dioxide and water are converted into glucose and oxygen. The reaction requires light energy, which is absorbed by a green substance called chlorophyll.
What is the equation for photosynthesis?
carbon dioxide + water (+ light energy) → glucose + oxygen
‘Light energy’ is shown in brackets because it is not a substance. You will also see the equation written like this:
What are the three elements needed for a plant to stay alive?
Carbon, Hydrogen, Oxygen.
How does a plant get its hydrogen and oxygen?
Plants get hydrogen and oxygen from water in the soil.Carbon and oxygen from carbon dioxide and oxygen in the atmosphere.
How does a plant get its water and carbon dioxide?
Water and carbon dioxide are used to synthesise food during photosynthesis. Oxygen is used to release energy from food during respiration.
What are the two important minerals a plant needs?
Nitrate - for making amino acids, which are needed to make proteins.
Magnesium - for making chlorophyll.
What happens if a plant does not get its two needed minerals?
If a plant does not get enough minerals, its growth will be poor. It will suffer from deficiency symptoms:
Deficient in nitrate - it will suffer from stunted.
Deficient in magnesium - its leaves will turn yellow.
