Xylem and Phloem Functions and Adaptations Quiz

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Questions and Answers

What is the main function of xylem?

  • Transport sucrose and amino acids
  • Transport water and mineral ions (correct)
  • Absorb water and minerals from the soil
  • Support

What is the function of phloem?

  • Absorb water and minerals from the soil
  • Support
  • Transport water and mineral ions
  • Transport sucrose and amino acids (correct)

Which adaptation is characteristic of xylem?

  • Thick walls with lignin (correct)
  • No cell contents
  • Joined end to end with cross walls
  • Elongated shape for a larger surface area

What is the function of root hair cells?

<p>Absorb water and minerals from the soil (D)</p> Signup and view all the answers

How does water enter root hair cells?

<p>Osmosis (D)</p> Signup and view all the answers

What is the main cause of water vapour loss during transpiration?

<p>Evaporation from the surface of the mesophyll cells (A)</p> Signup and view all the answers

Why does wilting occur?

<p>Excessive water loss compared to water uptake (A)</p> Signup and view all the answers

Which factor does not affect the rate of transpiration?

<p>Water movement in the xylem (B)</p> Signup and view all the answers

What creates the water potential gradient between the leaf and the atmosphere, affecting transpiration rate?

<p>Low humidity (D)</p> Signup and view all the answers

What is the primary function of phloem in plant physiology?

<p>Translocation of sucrose and amino acids (B)</p> Signup and view all the answers

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