plant transport 🫶🏻

Question 1

why can simple, unicellular organisms rely on diffusion for movement of substances in and out of the cell?

Answer 1

• smaller organisms have a larger S.A : Vol ratio
• allows for efficient exchange

Question 2

why do multicellular organisms require a transport system?

Answer 2

• larger organisms have a smaller S.A : Vol ratio
• this requires the assistance of a transport system to improve the exchange of substances

Question 3

what does the phloem transport and where?

Answer 3

sucrose and amino acids between the leaves and other parts of the plant

Question 4

what does the xylem transport and where?

Answer 4

water and mineral ions from the roots to other parts of the plant

Question 5

what system is the phloem and xylem part of?

Answer 5

translocation = phloem
transpiration = xylem

Question 6

what is the phloem and xylem made up of?

Answer 6

phloem = made up of living cells
xylem = made up of dead cells

Question 7

what are the walls like for the phloem and xylem?

Answer 7

phloem = cell walls have holes in called sieve plates
xylem = have thick walls made of lignin which helps strengthen the plant

Question 8

TRUE OR FALSE - is the xylem a continuous tube?

Answer 8

TRUE