plant nutrition and transport

Question 1

What are xylem tubes?

Answer 1

Carry water and mineral salts from plant’s roots to leaves

Question 2

What are phloem tubes?

Answer 2

Carry food (sugars and amino acids) from leaves to other parts of plant

Question 3

What are nitrates needed for?

Answer 3

Cell growth. Too little nitrates causes plant to be stunted with yellow leaves

Question 4

What are phosphates needed for?

Answer 4

Respiration and growth. Too little phosphates causes poor root growth and purple leaves

Question 5

What is potassium needed for?

Answer 5

Photosynthesis and respiration. Too little potassium causes poor growth and discoloured leaves

Question 6

What is magnesium needed for?

Answer 6

To make chlorophyll. Too little magnesium causes yellow leaves

Question 7

What is photosynthesis? Give the word equation

Answer 7

Production of glucose using sunlight and chlorophyll

CO2 + water –> glucose + oxygen

Question 8

Give the balanced equation for photosynthesis

Answer 8

6CO2 + 6H2O —> C6H12O6 + 6O2