Transport in Plants

Question 1

points on the xylem

Answer 1

• carries water and minerals dissolved inside
• are dead cells
• transports from the roots to the rest of the plant

Question 2

what reinforces xylem vessels

Answer 2

lignin- another type of carbohydrate

Question 3

what are the two pathways into the root

Answer 3

A) using osmosis: water enters the cell
B) bulk transport: water remains between cell wall and membrane

Question 4

how are minerals taken up

Answer 4

• most are taken up passively with water (are dissolved)
• can also be taken up by active transport- aerobic respiration generates the ATP

Question 5

what is transpiration

Answer 5

the movement of water through the plant (root to leaves).

Question 6

what is transpiration driven by

Answer 6

• evaporation of water from the stomata in the leaves (produces suction effect)
• root pressure (osmotic pressure caused by water entering the roots)
• also due to capillary action (an effect caused by the cohesive and adhesive properties of water)

Question 7

what is cohesive and adhesive

Answer 7

cohesive: sticks to itself
adhesive: sticks to other substances/surfaces

Question 8

points on the phloem

Answer 8

• transport system of nutrients such as sucrose, amino acids and minerals
• phloem vessels include cells called companion cells
• both cell types are living with cell membrane and cytoplasm
• phloem travels from the source to the sink

Question 9

what is a source

Answer 9

a location where sucrose is produces (roots, leave)

Question 10

what is a sink

Answer 10

a location where sucrose is used (root, flower, stem, leave)

Question 11

what is translocation

Answer 11

the movement or transport of sucrose from one phloem vessel to another

A) companion cells load/create concentrated gradient with sucrose on one side of the sieve plate