6. Plant Nutrition Flashcards
1
Q
Describe Photosynthesis
A
The process by which plants synthesise carbohydrates from raw materials using energy from light
2
Q
State the word equation for photosynthesis
A
Carbon dioxide + water → glucose + oxygen
3
Q
State the balanced chemical equation for photosynthesis
A
6CO₂ + 6H₂O → C₆H₁₂O₆+ 6O₂
4
Q
Explain where chlorophyll is and its role
A
- A green pigment found in chloroplasts
- To transfer energy from light (sun) into energy in chemicals, for the synthesis of carbohydrates
5
Q
List the use and storage of the carbohydrates made in photosynthesis
A
- Starch molecules for energy store
- Cellulose to build cell walls
- Glucose used in respiration to provide energy
- Sucrose for transport in the phloem
- As nectar to attract insects for pollination
6
Q
Explain the function and deficiency of nitrate and magnesium ions for chlorophyll
A
Magnesium Ion: Synthesise chlorophyll
Deficiency: Yellowing b/w the leaves (chlorosis)
Nitrate Ion: Synthesise amino acids (to produce proteins)
Deficiency: Stunted growth and yellowing b/w the leaves
7
Q
A