quiz 9

Question 1

what does unidirectional mean?

Answer 1

moves in one direction

Question 2

Name 4 factors which increase the rate of transpiration in plants?

Answer 2

increased temperature, decreased humidity,increased air movement and increased light intensity

Question 3

List 2 adaptations to the structure of phloem tissue which help dissolved sugar pass through

Answer 3

live cells form a tube. cells have sieve plates(cell walls with small holes) to allow dissolved sugar to pass

Question 4

During an investigation into the effect of temperature on rate of water uptake by a plant, what is the dependent variable?

Answer 4

Rate of water uptake by measuring the movement of the air bubble on a potometer

Question 5

How does water for photosynthesis enter plants?

Answer 5

absorbed from the soil by root hair cells

Question 6

Explain how increased tempreature increases the rate of transpiration

Answer 6

water evapourates faster at higher tempreatures

Question 7

What is the function of a palisade cell?

Answer 7

to absorb energy from light for photosynthesis

Question 8

Describe the tranpsirational stream

Answer 8

unidirectional stream of water carried up the plant in the xylem