Chemical Equations Flashcards
Chemical formula for glucose
C6 H12 O6
Very big molecule produced in the presence of light
What is glucose used for in plant
Energy for growth, movement (active transport)
Reproduction
6CO2 + 6H2O =
Carbon dioxide and water
(In the presence of sunlight)
6C H12 O6 +6 O2
Glucose and oxygen
Plant adaptation in drought
Wilted leaves due to guard cells in stomata losing their turgidity- prevents further loss
Hirsute leaves trap moisture near to plant to slow transpiration
Early senescence- leaf loss
Abscission-
Nitrogen cycle
From 78% N2
Bacteria consume and excrete Ammonia NH4
Then Nitrite NO2
Then Nitrate NO3
Which can be absorbed by roots and fungi strings into root system
Why does Nitrogen leave the soil system?
If it converts back to N2
If the crop is harvested
If loose Nitrogen (not fixed within organisms and plants) is washed out of soil
If the conditions in the soil aren’t oxygen rich then different bacteria will consume them in anaerobic conditions and release them
back as N2
How can we retain Nitrogen in the soil
By planting from the pea family (fabaceaea) crops like peas, beans and clover and mixing these into our planting plans and using as a green manure crop.
These have modules on their roots that are a habitat for nitrogen fixing bacteria.
Rely on plants and organisms rather than unsustainable nitrogen feeds which can be leached away causing river pollution (blue green algae)
What is the name for Nitrogen leaching
Eutrophication
Examples of hardiness
Nicotiana sylvestris
Passiflora ceruleans
Pinus sylvestris
H1c
H4
H7
What is an F1 hybrid?
They are the seeds of the first plants of the parents that have been chosen for specific qualities.
More expensive, more production
Any offspring from these plants will have diluted inherited qualities as external pollinators dilute the gene pool.
