The need for transport systems

Question 1

Why do plants need a transport system?

Answer 1

because they have a small SA to volume ratio (multicellular) so diffusion won’t be sufficient to meet metabolic demands

Question 2

Definition of mass flow

Answer 2

the bulk movement of materials through transpiration (water in xylem) or translocation (sucrose in phloem)

Question 3

What are the 3 minerals that plants need that have the same function? What is it?

Answer 3

-nitrogen, phosphorous, sulfer
-produce proteins, nucleic acids and membranes

Question 3

What are the other 2 minerals that plants need? Explain why

Answer 3

-potassium regulates water potential between cells
-calcium regulates water potential, forms cell walls and is involved in cell signaling

Question 4

How many different elements do plants need to grow?

Answer 4

14-each with a role in supporting plant development and functioning