Plant Growth and Development
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Questions and Answers

What is the main function of lignin in plants?

  • Facilitate mineral absorption
  • Increase photosynthetic ability
  • Enable gaseous exchange
  • Provide a waterproof barrier (correct)

    • In which plant group is lignin NOT found?

  • Bryophytes
  • Lycophytes
  • Chlorophytes (correct)
  • Red algae

    • Which plant structures evolved twice independently according to the text?

  • Vascular tissue (correct)
  • Roots
  • Flowers
  • Leaves

    • What is the purpose of microphylls and megaphylls in plants?

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

    How do plants ensure the transportation of water and nutrients to the right place as they grow bigger?

    <p>Through the action of phloem and xylem</p> Signup and view all the answers

    What is the role of phloem in plants?

    <p>Transport organic nutrients throughout the plant</p> Signup and view all the answers

    What specialized structure allows for the movement of water in plants?

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

    Why do bryophytes lack vascular tissues?

    <p>To allow for the movement of water and nutrients</p> Signup and view all the answers

    Which phase is dominant in bryophytes' life cycle?

    <p>Haploid phase</p> Signup and view all the answers

    What process characterizes the haplontic life cycle of bryophytes?

    <p>Fusion of gametes to form zygotes</p> Signup and view all the answers

    What is the primary function of rhizoids in bryophytes?

    <p>Anchoring the plant to the substrate</p> Signup and view all the answers

    What are guard cells responsible for in plants?

    <p>Regulating gas exchange through stomata</p> Signup and view all the answers

    What is the main function of phloem in a plant?

    <p>Conducting sugars through the plant body</p> Signup and view all the answers

    How do phloem and xylem differ in function?

    <p>Phloem moves sugars while xylem conducts water</p> Signup and view all the answers

    What is the role of phloem in a plant's growth?

    <p>Transport sugars to where they are needed</p> Signup and view all the answers

    Why are mycorrhizal fungi important for plants?

    <p>To extract nutrients from the environment</p> Signup and view all the answers

    How do root hairs contribute to a plant's growth?

    <p>Absorb nutrients and water from the soil</p> Signup and view all the answers

    What differentiates phloem from xylem in terms of their function?

    <p>Xylem moves water and minerals while phloem transports sugars</p> Signup and view all the answers

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