Photosynthesis And Nutrition Flashcards
All plants have the same ____ reactions and different _____ reactions
Photochemical, biochemical
Most abundant pigment for photosynthesis
Alpha Chlorophyll
25% of chlorophyll
Beta chlorophyll
Carotenoids
Beta-carotene, xanthophyll, and phycobilins
Groups of funnel-like pigments
Photosystems
The splitting of water
Photolysis
Antennae complex, 4:1 chlorophyll:carotenoids
PS1
Antennae 1:1 chlorophyll:xanthophyll
PS2
Reaction center at 700
PS1
Reaction center at 680
PS2
Protein catalyst of carbon-fixing pathway
Rubisco
Carbon fixing pathway for majority of plants, all happens in mesophyll
C3 pathway
Rare pathway, concentrates CO2 so O2 fixing can’t occur
C4 pathway
In C4 plants, C4 happens in ___ and C3 happens in ____
Parenchyma of mesophyll, bundle sheaths
Protein catalyst of C4
PEP
Pathway that temporally separates C3 and C4
CAM Pathway
CAM Pathway
Stomates open at night and take in CO2, saves water
Components of soil
Minerals, humus, water, air
Sand
.2-2mm
Silt
.002-.02mm
Clay
Smaller than .002mm
Large spaces between soil particles; function?
Non-capillary pore space; aeration
30-60 micrometer spaces btwn particles; function?
Capillary pore space; water retention
Height of space that exists in soil
Porosity
Soil with no airspace
Saturated
Soil capacity after gravity takes effect
Field capacity
Soul capacity that causes plant dessiccation
Permanent wilting point
Water held too tightly to be accessed
Hygroscopic water
Micelle
Negatively charged, microscopic clay particle
Plants are 97%
Carbon, hydrogen, and oxygen
Essential mineral criteria
- Required for normal lifecycle
- No substitutes
- Directly involved in metabolism
Macronutrients of plants
Carbon oxygen hydrogen magnesium phosphorous nitrogen potassium sulfur calcium
Micronutrients of plants (
Iron manganese zinc boron chlorine copper molybdenum
Adaptations to deficient soil
Carnivory
N-fixing bacteria
Mycorrhizae
3 strategies for mineral exccesses
Store, accumulate, excrete
Benefits of hyperaccumulation
Avoid toxicity
Disposal
Increased drought resistance
Defense
Serpentine soil
NH3 rock type
Plants removing contaminants from soil
Phytoaccumulation
Using plants to extract metals from soil
Phytoextraction
Using plants to detoxify soil
Phytodegradation