Plants

Question 1

Waxy Cuticle

Answer 1

Prevent water loss

Question 2

Upper epidermus

Answer 2

Transparent to allow light through

Question 3

Palisade Mesophyll

Answer 3

Tightly packed chloroplasts - maximum light absorption

Question 4

Vascular Bundle

Answer 4

Contains Xylem and Phloem

Question 5

Spongy Mesophyll

Answer 5

Large spaces for gases to diffuse

Question 6

Lower Epidermus

Answer 6

Stomata to regulate water loss and gas exhange

Question 7

Stomato

Answer 7

Open in light - CO2 to enter

Close in dark - no CO2 needed, no photosynthesis

Question 8

Guard Cells

Answer 8

Control the opening and closing of stomato

open - water enters - turgid
close - water leaves - flaccid

Question 9

Xylem

Answer 9

Transports water and mineral ions from the roots to the leaves

Question 10

Phloem

Answer 10

Transports sucrose and amino acids between the leaves and other parts of the plant

Question 11

Xylem Structure

Answer 11

• Made up of dead cells
• Continuous vessels
• No organelles - unblocked pathway
• Cell walls of lignin
• Flow is upward
• No cytoplasm

Question 12

Phloem Structure

Answer 12

• Made of living cells
• Cell walls made of cellulose
• Flow is up and down
• Permeable cell walls
• vessel involved in translocation

Question 13

Nitrate ions

Answer 13

Make amino acids for proteinsynthesis

Question 14

Magnesium Ions

Answer 14

Make chlorophyll

Question 15

Phosophate ions

Answer 15

Make nucleic acids for DNA/RNA

Question 16

Defficiency in Nitrates

Answer 16

Stunted growth

Question 17

Defiiciency in Magnesium

Answer 17

Yellow leaves

Question 18

Defficiency in Phosphates

Answer 18

Poor root growth and purple leaves