Lesson 1

Question 1

Name the parts of the stem

Answer 1

Vascular cambium, pith (centre of stem), phloem (on outside), xylem (in pith, epidermis, cortex

Question 2

Name the parts of a plant root

Answer 2

Root hair cells, epidermis, cell wall, plasmodesmata, cortex, endodermis, Casparian strip, pericycle

Question 3

How does a plant draw water from soil into root hair cells?

Answer 3

Mineral ions such as nitrates, are actively transported into cells and water potential is lowered so water enters via osmosis

Question 4

What is the apoplast pathway?

Answer 4

Water moves through the cortex due to cohesion via cell walls after being taken up by root hair cells

Question 5

What is the symplast pathway?

Answer 5

Water moves through cytoplasm in plasmodesmata by osmosis between cells

Question 6

What is the vacuolar pathway?

Answer 6

Water moves through cytoplasm and vacuoles