Nutrition: Plants

Question 1

What are the raw materials required for photosynthesis?

Answer 1

• -> Carbon dioxide

- ->Water

Question 2

What is light energy absorbed by?

Answer 2

–> Chlorophyll within chloroplasts

Question 3

What are the uses of glucose

Answer 3

• ->Source of energy in respir.
• -> Could convert into:
  - -> glucose 4 respir. (to release energy)
  - ->starch 4 storage
  - ->lipids 4 energy source in SEEDS
  - ->cellulose 4 cells walls
  - ->amino acids 4 mak. PROTEINS
  - -> w/ nit. abs. from soil

Question 4

What is the word equation for photosynthesis?

Answer 4

–> Carbon dioxide + Water–>Glucose + Oxygen

Question 5

Is photosynthesis endothermic or exothermic?

Answer 5

–>Endothermic

Question 6

Why is photosynthesis Endothermic/Exothermic?

Answer 6

• ->Photo. is endothermic

- ->Energy TAKEN IN from environment

Question 7

What is the symbol equation for photosynthesis?

Answer 7

6CO2 + 6H20 –>C6H12O6 + 6O2

Question 8

What are the factors affecting photosynthesis?

Answer 8

• ->Temperature
• ->Light intensity
• ->Carbon dioxide Concentration
• ->Water availability

Question 9

How does varying temperature affect the rate of photosynthesis?

Answer 9

• ->As temp increa.
• ->rate of photo. increa.
• ->as react. is cont. by
  - ->ENZYMES
• ->When opt. temp. reached
  - ->enzymes denat.
  - ->RoR dexreases

Question 10

How does varying light intensity affect the rate of photosynthesis?

Answer 10

• ->As light intensity increa.
• ->rate of photo. increa.
• ->Trend will cont. until some other fact. prevents

Question 11

How does varying carbon dioxide concentration affect the rate of photosynthesis?

Answer 11

• ->CO2 also needed to make GLUCOSE
• ->As conc. of CO2 increa.
• ->RoR increa.