Acquista Bio Ch 23

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Danielvu28
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118421
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Acquista Bio Ch 23
Updated:
2011-11-21 20:57:11
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Bio 23
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Acquista Test Tuesday.
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  1. What makes up the outer coverings of a plant?
    DERMAL TISSUE
  2. To observe cell division (cell division = mitosis) in a plant under the compound
    microscope where should you, a student, look?
    TIP OF THE SHOOT
  3. How do cacti such as saguaros and barrel cactus produce food even though they are one
    big stem without leaves?
    THEY PRODUCE FOOD VIA PHOTOSYNTHESIS (in their bodies/stems)
  4. What accounts for primary growth in stems?
    INCREASE IN LENGTH
  5. Where is ground tissue?
    IN ROOTS, STEMS and LEAVES
  6. In most plants, which organs are adapted to capture sunlight for photosynthesis?
    LEAVES
  7. Please study the anatomy of the root on p. 670. Which part of the root (if damaged)
    would prevent further root growth?
    ROOT CAP APICAL MERISTEM
  8. What is one way in which stems are different from roots?
    STEMS CAN PLAY A ROLE IN PHOTOSYNTHESIS (sugar production)
  9. What might a thin tree ring indicate?
    A YEAR OF DROUGHT
  10. Where does most of the photosynthesis (sugar production) take place?
    MESOPHYLL LAYER OF THE LEAF
  11. What anchors a seed plant to the ground?
    ROOTS
  12. What are the 2 parts of the xylem in angiosperms (angiosperms = flowering plants)?
    TRACHEIDS AND VESSEL ELEMENTS
  13. What is vascular tissue in plants?
    XYLEM & PHLOEM
  14. What is the name of the layer of cells that encloses the vascular tissue in the central
    region of the root?
    ENDODERMIS
  15. What makes up the vascular cylinder of the root?
    XYLEM & PHLOEM
  16. What causes root pressure?
    ACTIVE TRANSPORT of water and salts INTO THE VASCULAR CYLINDER
  17. What is one of the main functions of stems?
    TO CARRY WATER AND NUTRIENTS BETWEEN ROOTS AND LEAVES
  18. What is untrue about the pressure-flow hypothesis regarding how sap/sugar is moved
    through the plant?
    • THE MOVEMENT OF WATER INTO A NUTRIENT RICH REGION (such as a fruit)
    • DECREASES THE PRESSURE IN THAT REGION
  19. Water molecules attract to other molecules (such as glass molecules). What is the
    name of this force?
    ADHESION
  20. What would happen if the xylem of a young oak tree was destroyed?
    • IT WOULD INTERFERE WITH THE TREE’S ABILITY TO CONDUCT WATER TO
    • THE LEAVES
  21. Water moves with ‘capillary action’ through which cells?
    XYLEM
  22. What is the name for the movement of sugars in a plant?
    THE PRESSURE-FLOW HYPOTHESIS
  23. For a plant, where does the exchange of oxygen and carbon dioxide gases occur?
    STOMATA = STOMATES
  24. To open a stomate, what happens to the water pressure inside guard cells?
    IT INCREASES TO HIGH INTERNAL PRESSURE
  25. Why are stomates found mostly on the lower surface of the leaf?
    • WATER LOSS WOULD BE LESS ON THE SHADED LOWER SURFACE THAN IN
    • DIRECT SUN
  26. When are stomates usually open?
    When are stomates usually open?

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