Topic 3 Plant cells - holding,carrying and guarding

Question 1

Phloem

Answer 1

Type of tissue that transport sugars made in the leaves to other parts of a plant

Question 2

Translocation

Answer 2

Transport of materials, such as water and glucose, in plants

Question 3

Xylem vessels

Answer 3

Pipelines for the flow of water up plants. They are made up of the remains of dead xylem cells fitted end to end with the joining walls broken down. Lignin in the cell walls gives the, strength

Question 4

Lignin

Answer 4

A hard substance in the walls of dead xylem cells that make up the tubes carrying water up plant stems. Lignin forms up to 30 per cent of the wood of trees

Question 5

Stomata

Answer 5

Small openings mainly on the lower surface of leaves. The spores are opened and closed by guard cells. Singular= stoma

Question 6

Transpiration stream

Answer 6

Movement of water through a plant as a result of loss of water from the leaves

Question 7

Transpiration

Answer 7

Loss of water from plant leaves through their stomata

Question 8

Guard cells

Answer 8

Cells on either side of a stoma that work together to control the opening and closing of the stoma

Question 9

Vascular bundles

Answer 9

Groups of xylem and phloem vessels within plant stems

Question 10

Wilt

Answer 10

Droop plant stems and leaves wilt when there is insufficient water in their cells

Question 11

Vacuoles

Answer 11

Sacs within a cell used to store food and wastes

Question 12

Flaccid

Answer 12

Describes cells that are not firm due to loss of water

Question 13

Turgid

Answer 13

Describes something that is firm