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lab exam review 12

lab exam review 12 - Roots anchortheplant, starch Stems...

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BIOL 112 Laboratory Review FLOWERING PLANT ANATOMY: Roots   anchor the plant, absorb and transport water and nutrients and store sugars and  starch.  Stems   support the leaves, flowers and seed stalks and transport water and nutrients  though the plant.  Leaves  are the primary organs of photosynthesis.  Ground tissue –  Parenchyma, Collenchyma and Sclerenchyma.  Parenchyma comprises the bulk of the entire plant body.  Collenchyma and sclerenchyma are supportive tissue.  The   epidermis   has   numerous   small   openings   called   stomata   through   which   water  transpiration and fas exchange occur.   The “fuzz” on leaves consists of leaf hairs, or  trichomes.   These extensions of epidermal  cells often serve a defensive purpose. Some trichomes are glandular releasing toxic  chemicals.
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