B2.2.4 plant Transport Systems

Question 1

Xylem

Answer 1

• transports water and mineral ions
• Roots to stem, leaves and flowers
• Water diffuses into roots by osmosis
• mineral ions are taken in my active transport

Question 2

Phloem

Answer 2

• transports dissolved sugars made during photosynthesis and other soluble food molecules
• from leaves to other areas=translocation
• sugars taken to meristems to make new cells and energy in roots.

Question 3

Xylem and phloem

Answer 3

Xylem + phloem = vascular bundle

• tissues found close together in plant
• transport
• support

Question 4

Xylem structure

Answer 4

• made of dead xylem cells
• one way movement
• wall=thickened for support
• no end walls between cells

Question 5

Phloem structure

Answer 5

• two-way movement
• sieve plates (cell wall with small holes)
• made of living cells
• cell walls dont completely break down = sieve plates
• sieve plates allow dissolves sugars through

Question 6

Vascular bundle in leaf

Answer 6

Network that supports softer leaf tissue

Question 7

Vascular bundle in stem

Answer 7

Located around outer edge for strength in bending in the wind

Question 8

Vascular bundle in root

Answer 8

Located in centre, enables root to act as centre and anchor