Plant Biology: Xylem and Phloem Transport
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Questions and Answers

What is the primary function of lignin in xylem vessels?

  • To allow lateral transport of substances
  • To facilitate the movement of water
  • To enhance the absorption of minerals
  • To provide structural support (correct)
  • Which of the following structures allows food transport in the phloem?

  • Xylem vessel
  • Sieve plate (correct)
  • Companion cell
  • Vacuole
  • What characteristic of xerophyte plants helps to minimize water loss?

  • Large stomata
  • Wide leaves
  • Swollen roots
  • Needle-like leaves (correct)
  • Which pathway does water primarily follow from soil into the root hair cells?

    <p>Apoplast pathway</p> Signup and view all the answers

    The process of sucrose moving from a source to a sink in a plant is referred to as what?

    <p>Translocation</p> Signup and view all the answers

    What role do companion cells play in the phloem?

    <p>Generating ATP for loading</p> Signup and view all the answers

    Which type of xylem vessel structure allows for the lateral movement of water?

    <p>Pitted</p> Signup and view all the answers

    What is the main purpose of sunken stomata in xerophytes?

    <p>To trap water vapor</p> Signup and view all the answers

    During the transport of water through the symplast pathway, where does the water move?

    <p>From cytoplasm to cytoplasm</p> Signup and view all the answers

    How does water enter the sieve tube from the xylem during translocation?

    <p>By osmosis</p> Signup and view all the answers

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