Topic 6 - Plant Structures And Their Functions

Question 1

Active transplant

Answer 1

Particles travel from a low to high concentration using energy

Question 2

Diffusion

Answer 2

Particles from a high to low concentration

Question 3

Osmosis

Answer 3

Water particles from a high to low concentration

Question 4

Root hair cells

Answer 4

Absorbs mineral ions and water from the soil
Mineral ions - active transplant (low to high concentration)
Water - osmosis (high to low concentration)
Large surface area

Question 5

Phloem tubes

Answer 5

Transport sucrose
Elongated living cells
Transport goes both ways
Translocation

Question 6

Xylem tubes

Answer 6

Takes water and mineral ions up from the roots of the plant
Made up of dead cells and strengthened by lignin
One direction only (upwards)
Transpiration stream (water and mineral ions being transported through the xylem from the roots to the leaves to be evaporated)

Question 7

Transpiration

Answer 7

Loss of water from a plant
Roots -> xylem vessels -> leaves -> evaporation
Constant stream