Chap 4 - Transport In Plants

Question 1

What are roots used for in a plant?

Answer 1

Absorbing water and mineral

Question 2

Name 3 features of a leaf?

Answer 2

Thin, shorter diffusion distance, Branching veins which transport water + mineral ions, glucose taken out of leaf, Stomata used for gas exchange

Question 3

What are the 2 types of transport vessel?

Answer 3

Phloem tubes which carry glucose up to the plant, Xylem tubes carry water and mineral ions up from roots to shoots

Question 4

What are the 5 cross sections of a leaf?

Answer 4

Upper epidermis, Palisade mesophyll, Vascular bundle, Spongy mesophyll, Stomata on lower epidermis

Question 5

Define humidity?

Answer 5

Amount of water vapour in the air

Question 6

What is the stomata?

Answer 6

Pores on the leaves on the plant that allow for gas exchange that can open or close dependant on conditions

Question 7

What is transpiration?

Answer 7

Movement of water and mineral ions from roots to shoots and leaves within the xylem tube

Question 8

What is translocation?

Answer 8

Movement of glucose up and down stems to growing and storage tissues through phloem tube

Question 9

What cells do stomata have?

Answer 9

Guard cells

Question 10

What is carbon dioxide used for within stomata in leaf?

Answer 10

Reactant for photosynthesis

Question 11

Name 2 control variables when investigating transpiration?

Answer 11

Number of leaves, species of plant

Question 12

How do you calculate density?

Answer 12

Amount of stomata present divided by area of leave

Question 13

How is water absorbed from soil by roots?

Answer 13

Osmosis

Question 14

Does a phloem cell have permeable cell walls?

Answer 14

Yes

Question 15

What are the 4 things that effect the rate of transpiration?

Answer 15

Temperature, humidity, Air movement, light intensity