E1: Abiotic Factors that Limit Distributions Flashcards
1
Q
What are the abiotic factors that limit distribution?
A
Temperature, moisture, and pH
2
Q
Provide an example of temperature limiting distribution.
A
- Willow twigs harvested during the winter can survuve temps lower than -150 °C
3
Q
Define moisure in terms of limiting distribution.
A
The organism’s ability to maintain water use will effect their distribution.
4
Q
What are the three adaptations plants use to avoid desiccation?
A
- improving water uptake at roots (rapid root growth into deeper areas)
- reducing water loss (reduce leaf surface area and close stomata)
- Store water efficiently
5
Q
What is a common garden experiment?
A
Plants from different locations are grown under similar conditions in the same place. Results reveal genetic components.
6
Q
Who did the common garden experiment?
A
Clausen 1948
7
Q
Provide an example of the common garden experiment.
A
Races of Weastern Yarrow from the western slope with lower temps and the eastern slope with drier conditions.
