Plant Science Chapter 4

  1. natural underground reservoirs of water
  2. water conserving process found in many arid, high temperature tolerant plants such as cacti
    CAM metabolism
  3. conditions such as wind, precipitation, and temperature that prevail in a given region
  4. temperature at which water vapor condenses from the air
    dew point
  5. genetic variant within a species that is adapted to a particular environment yet remains interfertile with all other members of the species
  6. build up of plant nutrients in a body of water that increases plant growth and often results in reduced oxygen that is needed for aquatic animals to survive
  7. type of lamp that illuminates when an electric current passes through a vapor that contains xenon gas and/or metal halide compounds
    high intensity discharge (HID)
  8. movement of water from the atmosphere to the earth and its return to the atmosphere
    hydrologic cycle
  9. plant that flowers when the light period is greater (dark period is shorter) than a critical duration
    long-day plant
  10. characterized by cool, wet winters and warm, dry summer
    Mediterranean climate
  11. plant shape determined by light quality particularly through relative amounts of red, far-red, and blue light
  12. a plant having photoperiodism
  13. response of a plant to the relative lengths of day and night
  14. light-sensing pigment occurring in the cytoplasm of green plants
  15. ratio of the amount of water vapor in the air compared to what the air can hold at a given temperature
    relative humidity (RH)
  16. greatest pressure that water vapor could exert if the air at a given temperature were saturated with water vapor
    saturated vapor pressure (SVP)
  17. change in growth in response to overcrowding among plants
    shade avoidance response
  18. plant that initiates flowers only under short-day conditions
    short-day plants (SDP)
  19. difference between the amount of moisture actually in the air and the amount the air holds when it is saturated
    vapor pressure deficit (VPD)
  20. current condition of temperature, wind, precipitation, etc. in an are
  21. landscapes that are designed to reduce or eliminate the need for irrigation
Card Set
Plant Science Chapter 4
Plant Science Chapter 4 Key Terms