transport in plants

Question 1

what does the transport system in plants enable?

Answer 1

• leaves to receive water for photosynthesis
• mineral ions needed to convert products of photosynthesis into useful substances

Question 2

what is the xylem made up of?

Answer 2

• thick walled dead cells which contain no cytoplasm
• completely hollow
• arranged end to end

Question 3

what forms the plant organ system for the transport of substances around the plant?

Answer 3

roots, stem and leaves

Question 4

how are the xylem and phloem arranged?

Answer 4

in groups called vascular bundles

Question 5

what does the xylem transport?

Answer 5

water and mineral ions from the roots to the leaves

Question 6

what does xylems cell wall contain?

Answer 6

lignin

Question 7

lignin is…

Answer 7

waterproof

Question 8

what mineral ions does xylem transport?

Answer 8

nitrate ions and magnesium ions

Question 9

what does the phloem transport?

Answer 9

food materials (mainly sucrose and amino acids) from photosynthesising leaves to non- photosynthesising regions in the roots and stem

Question 10

what are the cells like in the phloem?

Answer 10

living and not hollow

Question 11

how do substances move in the phloem?

Answer 11

from cell to cell through pores in the end walls of each cell

Question 12

xylem is always on the inside or outside?

Answer 12

inside

Question 13

phloem is always on the inside or the outside?

Answer 13

outside

Question 14

what are phloem’s cell wall made out of?

Answer 14

cellulose

Question 15

what is translocation?

Answer 15

moving sucrose and amino acids around the plant

Question 16

how do plants take in water?

Answer 16

from the soil through their root hairs

Question 17

adaptations of root hair cells?

Answer 17

• thin walled (short distance)
• hair like extensions (increase surface area)

Question 18

what is the function of a root hair cell?

Answer 18

absorb water and minerals from the soil

Question 19

what is the concentration of solutes like in root hair cells?

Answer 19

• high concentrations
• concentration of solutes outside the cell is lower

Question 20

how are mineral ions transported into root hair cells?

Answer 20

actively transported

Question 21

how will water enter the root hair cell?

Answer 21

by osmosis

Question 22

how is water transported around the plant?

Answer 22

carried in the xylem vessels to all parts of the plant