Unit 2 Transport in plants

Question 1

Guard cells

Answer 1

Control gas exchange in leaves by controlling opening and closing of stomata

Question 2

Leaf emidermis

Answer 2

Tissue forming the upper nad lower covering of leaves

Question 3

Liginin

Answer 3

Provides strath and support in xylem to withstand water pressures

Question 4

Minerals

Answer 4

Nutrient ions essential for healthy growth

Question 5

Phloem

Answer 5

Vessels in plant the transport sugars
Alive
Have Seite plates and companion cells

Question 6

Root emerdermis

Answer 6

Outer layer of cells of a root

Question 7

Root hair cells

Answer 7

Uptake of water and minerals

Question 8

Spongy mesdphyll

Answer 8

Leaf tissue loss lay packed

Air spaces between them to allow gas exchange

Question 9

Stmata

Answer 9

Tiny pores in the leaf eperdermis that allows gas exchange

Water evaporates through stomata

Question 10

Trasperation

Answer 10

Evaporation of water through stomata of leaves

Question 11

Vascular tissue

Answer 11

Plant tissue consisting of phloem and xylem that transports material in a plant

Question 12

Vein

Answer 12

Vascular tissue consisting of xylem vessels and phloem tubes running through a leaf

Question 13

Xylem vessels

Answer 13

Narrow dead tables with lignin in their walls for transports of water and minerals in plants

Question 14

Plant organs

Answer 14

Root
Stem
Leaves

Question 15

Factors affecting transpiration rate

Answer 15

Temperature- high temperature = rate of diffusion + evaporation are faster

Humidity - decreases rate as there is already moist air in surroundings

Wind speed - increases rate of evaporation + diffusion

Surface area - increase as more stomata in big leaves