Other questions in this quiz

2. What is cohesion?

  • The sticking together (attraction) between molecules of the same type.
  • Suction that causes molecules to be pulled.

3. What evidence is there for mass flow?

  • If a ring of bark is removed from a woody stem a bulge forms above the ring because the sugars can't move past the area where the bark has been removed. This is evidence that there is a downward flow of sugars.
  • If a ring of bark is removed from a woody stem a bulge forms below the ring because sugars can't move past. This is evidence that there is a upward flow of sugars.

4. What transports water, minerals and ions up from the roots to the leaves?

  • Xylem Tissue
  • Phloem Tissue
  • Transpiration
  • Apoplastic Pathway

5. What are companion cells?

  • Living cells found in phloem that support sieve tube elements by carrying out the living functions for them e.g. providing energy
  • Dead cells that assist sieve tube elements by controlling what they do.
  • Living cells that connect phloem tissue together.

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Exchange and Transport Systems resources »