BI 101 notes 10.3 - Plant adaptation a characteristic that...

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Plant adaptation - a characteristic that enables it to survive I. leaf adaptation i. water loss 1. guard cells – open/close stomata a. water vapor is lost from stomata b. guard cells can close to prevent too much loss of water 2. Waxy cuticle a. oils help repel water b. repel insects c. prevents water from leaving ii. Limited water 1. Direct water roots – in smaller plants (collects morning dew) 2. Store water near the roots iii. Extreme Tempuratures 1. conifer leaves – minimize surface area iv. Predators 1. Trichomes – hair like fuzz around a leaf a. Sometimes has poisons 2. Resins and Oil glands a. makes the plant inedible II. Stem adaptations i. Limited water 1. water is stored in the stem 2. photosynthesis in stem 3. leaves are sometime neadles ii. Support 1. tendrils – wraps around other structures 2. fibers a. flax – used for textiles b. wood III. root adaptation
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Unformatted text preview: a. buttresses – triangular shape for support ii. Excess water 1. mangroves a. stilt roots – exposed to the air for gas excange iii. Air roots – grow from ground to grow above water Seasons – seasonal changes I. Deciduous – loose leaves a. Loose leaves once a year II. Evergreen – keep leaves throughout the winter a. Continually replacing leaves all year round Successions – communities changing over long periods of time I. Primary succession – new land created i. Nothing there ii. Long time to recover II. Secondary succession – old land b. Something survives c. Shorter time to recover Colonizing plants Use wind dispersal Many seeds, fast lifecycle Change from pioneer community climax community Snags – dead standing tee Provides nutrients...
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  • Spring '08
  • King,K.
  • Biology, Ecological succession, stomata a. water, adaptation i. water, Direct water roots

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