Plants And Photosynthesis Year 9 Flashcards
Why is photosynthesis important
Maintains o2 co2 levels
Produces food for other organisms
What increases plants biomass
Glucose being stored as starch
What is glucose/starch
A store of chemical energy
May be broken down to release energy for the plant
How are plant leaves adapted for photosynthesis
Broad and flat to trap max light and max co2 from stomata
What are guard cells
Cells that control the opening and closing of stomata
How are palisade cells adapted for photosynthesis?
Found near the upper surface of the leaf
Tightly packed
Many chloroplasts
Move towards the light
What controls the rate of photosynthesis
Light intensity
Co2 concentration
Temperature
Photosynthesis equation
Carbon dioxide+water —-> glucose + oxygen
—-> = Suns energy
What do root hairs do?
Increase surface area to maximise water and minerals absorption
Why do roots need oxygen
For respiration
What are nitrates needed for
To make proteins
Why do plants need magnesium
To make chlorophyll
What happens if a plant is deficient in minerals
It hinders growth
