Transport in plants

Question 1

Translocation

Answer 1

The movement of dissolved sugars from the leaves to the rest of the plant in the phloem

Question 2

Transpiration

Answer 2

The evaporation of water from a leaf

Question 3

Transpiration stream

Answer 3

The continuous flow of water through a plant from the roots to the leaves

Question 4

Transpiration step 1:

Answer 4

Water is absorbed into the root hair cells by osmosis

Question 5

Transpiration step 2:

Answer 5

The water is pulled up the xylem

Question 6

Transpiration step 3:

Answer 6

The water enters the leaf where some is used in photosynthesis and some enters plant vacuoles for turgor

Question 7

Transpiration step 4:

Answer 7

The remaining water evaporates from the leaf through the stomata

Question 8

Concentration gradient

Answer 8

The difference in concentration between two areas

Question 9

Factors affecting transpiration: High light intensity

Answer 9

Increases, rate of photosynthesis has increased and stomata are more open

Question 10

Factors affecting transpiration: High temperature

Answer 10

Increases, water particles have more energy so evaporate quicker

Question 11

Factors affecting transpiration: High humidity

Answer 11

Decreases, creates a less steep concentration gradient

Question 12

Factors affecting transpiration: High wind speed

Answer 12

Increases, water around the leaf is blown away creating a steeper concentration gradient

Question 13

Xylem

Answer 13

Transports water and minerals, hollow with no end walls

Question 14

Phloem

Answer 14

Transports dissolved sugar, cell walls between cells break down to form sieve plates