Plant Anatomy: Root Structure and Function
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Questions and Answers

What is the primary function of turgor pressure in plant cells?

  • Maintain structural integrity (correct)
  • Regulate hormone production
  • Generate heat for the plant
  • Aid in photosynthesis

    • How are photosynthates, such as sugars, transported within plants?

  • By active transport from roots to leaves
  • Through the phloem from leaves to other parts of the plant (correct)
  • Through the xylem from leaves to roots
  • By diffusion through cell membranes

    • Which protein group responds to red and far-red light, controlling growth and seasonal responses?

  • Phototropins
  • Phytochromes (correct)
  • Carotenoids
  • Chlorophylls

    • What is the directional growth response of plants towards a light source called?

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

    Which of the following is an example of thigmomorphogenesis?

    <p>Coiling of tendrils around a support</p> Signup and view all the answers

    In what way do roots typically respond to gravity?

    <p>Negative gravitropism (growing down)</p> Signup and view all the answers

    What distinguishes plant hormones from animal hormones in terms of production and function?

    <p>Plant hormones act synergistically, while animal hormones work alone.</p> Signup and view all the answers

    'Volatile odors and toxins' are examples of what type of plant defense mechanism against predators?

    <p>'Chemical deterrents'</p> Signup and view all the answers

    Which plant adaptation is exemplified by tendrils coiling around a support?

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

    What is the primary function of phytochromes in plants?

    <p>Trigger germination</p> Signup and view all the answers

    Which feature distinguishes thorns from spines in plants?

    <p>Arise from leaf margins</p> Signup and view all the answers

    What role does phototropism play in plants' response to light?

    <p>Maximizing light absorption for photosynthesis</p> Signup and view all the answers

    In which direction do roots typically exhibit gravitropism?

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

    What is the primary function of cellulose within plant cells?

    <p>Structural support</p> Signup and view all the answers

    Which protein group responds to blue light and controls leaf opening and closing in plants?

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

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