Exam 2
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a plant portion that can develop into a new plant
Propagule
Advantages of asexual propagation
-reaches maturity quickly -allows propagation of difficult plants -produces uniform growth -maintains unique characteristics
Disadvantages of asexual propagation
-plant propagules lose viability quickly -Number of plant propagules from a stock is low -Diseases spread easily -More expensive than seed propagation
What is the most common type of asexual propagation?
Vegetative cuttings (stem, root, or leaf cuttings)
The process of joining two different plants to form a more desirable new plant
Grafting
The top part of a graft that is attached
Scion
The lower part of a graft
Stalk
The part where two segments of a plant are connected
Graft junction
4 Commonly grafted species
Roses, citrus, apples, and grapes
7 objectives of pruning
• Health and safety • Maintain desired form • Dwarfing • Invigoration • Increase productivity • Equalize root/shoot ratio • Develop strong branch framework
Which type of branch angle is better for pruning
Wide (Y) Crotch angle is stronger (V is selectively pruned out as it is weaker)
4 Metabolic Processes
Anabolic, Catabolic, Endergonic, Exergonic
Builds complex molecules
Anabolic Process
Process that breaks down complex molecules into smaller molecules
Catabolic Process
Process that requires energy input
Endergonic Process
Processes that release energy
Exergonic process
What happens to water as plants absorb it?
It is oxidized (loses electrons)
What happens when plants absorb carbon dioxide?
It is reduced (gains electrons)
During photosynthesis water is transformed into ____ and
sugar and oxygen
Formula for Photosynthesis
6 CO2 + 12 H2O + Light –> C6H12O6 + 6 H2O + 6O2
Formula for Cellular (Aerobic) Respiration
C6HC6H12O6 + 6O2 –> 6 CO2 + 12 H2O + Energy
The first stage of Photosynthesis produces
Oxygen, ATP, and NADPH
What protein starts the Calvin Cycle?
Rubisco (RuBP)
Phase II of Photosynthesis
The Calvin Cycle