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Plant science
exam
8
Biology
Undergraduate 1
09/22/2011

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Cards

Term
what does the pericyle produce?./
Definition
Lateral roots
Term
whats the difference between monocots and dicot roots
Definition
Monocots, have thin roots, a central pith and a xylem

Dicots have a single taproot with roots emerging from main root
Term
How does water get into the root?
Definition
Water passes through soil , causing a difference in osomotic pressure
Term
What are the adaptations for poor soils
Definition
Root nodules, mycorrihaizae,fine root systems, Pitcher plants -digestive
Term
What do root nodules do?
Definition
Fix nitrogen
Term
what does Mycorrhizae do?
Definition
Uptake control of Phorphourus.
Term
What are some global and local soil problems?
Definition
Lack of specific minerals
Excess of specific minerals
Erosion
Salinistation
Term
What is a plant hormone
Definition
are small molecules
• are effective at very low concentrations
• regulate the development of plants through
• changes in the production
• changes in the sensitivity of the plant/tissue to
the hormone
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