Photosynthesis Flashcards
What is the symbol equation for photosynthesis?
6CO2 + 6H2O -> C6H12O6 + 6CO2
Where does photosynthesis take place?
It takes place in the stem and leaves
Where is chlorophyll found and what does it do?
It is found in the chloroplasts and they absorb light energy for photosynthesis
Name the parts of a plant cell
Nucleus Chloroplast Cytoplasm Vacuole Cell membrane Cell wall
What extra parts does a plant cell have to an animal cell?
Chloroplast
Vacuole
Cell wall
What does the nucleus do?
Store the DNA
What does the cytoplasm do?
Jelly like substance, most of the cell activities happens here
What does the cell membrane do?
Controls what goes in and out of the cell
What does the vacuole do?
Is filled with sap and is storage space
What does the chloroplast do?
It contains chlorophyll for the process of photosynthesis
What does the cell wall do?
It is made of cellulose and is to support the cell
Name the parts in the cross section of a leaf
Waxy cuticle Epidermis Palisade layer Vein Spongy layer cells Air space Lower epidermis Guard cells Stomata
What do plants store glucose as?
Starch
What can glucose be used for?
Respiration
Cellulose
Minerals
Name the 4 main minerals and their usage
Nitrates - making leaves
Phosphates - making roots
Potassium ions - making flowers & fruit
Magnesium ions - making chlorophyll
Where do minerals come from?
Rocks
Natural fertilisers
Artificial fertilisers
What does the Xylem do?
It carries water up the plant to the leaves
What happens if you give a plant too much water?
The plant will die
What chemical do you use to test for starch?
Iodine
What is the process of eutrophication?
Fertilisers get washed into rivers causing the plants/algae to overgrow and block out the sunlight. Other plants die and use up oxygen as they rot causing fish and other animals to suffocate
What happens when there is a Nitrogen deficiency?
Weak stem, yellow or dead leaves from bottom upward
What happens when there is a phosphorous deficiency?
Purple leaves, small roots
What happens when there is a potassium deficiency?
Poor flower/fruit growth, yellow leaves with dead spots
What happens when there is a magnesium deficiency?
Leaves turn yellow from bottom upwards
What is the word equation for photosynthesis?
Carbon dioxide + Water (+ energy) -> Glucose + Oxygen
What is transpiration?
Transpiration is evaporation of water from plant leaves.
What is diffusion?
The process by which substances move down a concentration gradient.
(Movement of gases)
How do plants make carbohydrates?
Through photosynthesis, producing glucose sugars
What does the stomata do?
Stomata open and close to allow the intake of carbon dioxide and the release of oxygen.
