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1. What is the photosynthesis word equation?
2. What are the 3 limiting factors and explain each factor?
1. Temperature:
- Controlled by enzymes
- Goes up to a certain temperature to which the enzymes denature
- Rate of reaction decreases
2. Light intensity:
- More light= Faster rate of photosynthesis
- Other factors can limit the rate:
- Temperature not being high enough/ Not enough CO₂
3. Carbon Dioxide Concentration:
- More carbon dioxide= Faster reaction
- Other factors can limit the rate:
- Temperature not being high enough/ Not enough light
3. Write in your own words what you understand about Glasshouse Condition.
Glasshouse Condition:
- Uses knowledge about limiting factors and how they affect the rate of photosynthesis to
ensure maximum crop yields for farmers
- Farmers are unable to control the factors to increase growth of plants if they grow
crops outside
- Conditions that can be controlled in the glass house:
Artificial heating (Enzymes work faster at slightly higher temperatures)
Carbon
dioxide
Water
Glucose
Oxygen
Light
Chlorophyll
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Artificial lighting( The process of photosynthesis lasts longer)
Increasing carbon dioxide content(The process of photosynthesis is quicker)
Regular watering
4. Structure and description of leaves
Wax cuticle:
- Protective layer on top of the leaf
- Prevents water from evaporating
Upper epidermis:
- Thin and transparent
- Allow light to enter palisade mesophyll layer
Palisade mesophyll:
- Tightly packed with chloroplasts: to absorb more light
- Maximising photosynthesis
Spongy mesophyll:
- Contains internal air spaces that increases total surface area to volume ratio:
- Diffusion of gases (mainly CO₂)
Lower epidermis:
- Contains guard cells and stomata
Guard cell:
- Absorbs and loses water to open and close stomata
- To allow CO₂ to diffuse in, O₂ to diffuse out
Stomata:
- Place for gas exchange: Opens during the day, closes during the night
- Evaporation of water occurs here
- Found in greater concentration on the underside of the leaf to help reduce water loss
Vascular bundle:
- Contains xylem and phloem to transport substances to and from the leaf
Xylem:
- Transports water into the leaf to be used by mesophyll cells in photosynthesis
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- Also for transpiration from stomata
Phloem:
- Transports sucrose & amino acids around the plant
5. What are the 2 minerals and functions for plants and what happens when it is deficient?
1. Magnesium:
- Function: Needed to make chlorophyll
- Deficiency: Causes yellowing between the veins of leaves (Chlorosis)
2. Nitrate:
- Function: Needed to make amino acids
- Deficiency: Causes stunted growth and yellowing of leaves

Unformatted Attachment Preview

1. What is the photosynthesis word equation? Carbon dioxide Light Water Glucose Oxygen Chlorophyll 2. What are the 3 limiting factors and explain each factor? 1. Temperature: - Controlled by enzymes - Goes up to a certain temperature to which the enzymes denature - ↳ Rate of reaction decreases 2. Light intensity: - More light= Faster rate of photosynthesis - Other factors can limit the rate: - ↳ Temperature not being high enough/ Not enough CO₂ 3. Carbon Dioxide Concentration: - More carbon dioxide= Faster reaction - Other factors can limit the rate: - ↳ Temperature not being high enough/ Not enough light 3. Write in your own words what you understand about Glasshouse Condition. Glasshouse Condition: - Uses knowledge about limiting factors and how they affect the rate of photosynthesis to ensure maximum crop yields for farmers - Farmers are unable to control the factors to increase growth of plants if they grow crops outside - Conditions that can be controlled in the glass house: ● Artificial heating (Enzymes work faster at slightly higher temperatures) ● Artificial lighting( The process of photosynthesis lasts longer) ● Increasing carbon dioxide content(The process of photosynthesis is quicker) ● Regular watering 4. Structure and description of leaves Wax cuticle: - Protective layer on top of the leaf - Prevents water from evaporating Upper epidermis: - Thin and transparent - Allow light to enter palisade mesophyll layer Palisade mesophyll: - Tightly packed with chloroplasts: to absorb more light - Maximising photosynthesis Spongy mesophyll: - Contains internal air spaces that increases total surface area to volume ratio: - Diffusion of gases (mainly CO₂) Lower epidermis: - Contains guard cells and stomata Guard cell: - Absorbs and loses water to open and close stomata - ↳To allow CO₂ to diffuse in, O₂ to diffuse out Stomata: - Place for gas exchange: Opens during the day, closes during the night - Evaporation of water occurs here - Found in greater concentration on the underside of the leaf to help reduce water loss Vascular bundle: - Contains xylem and phloem to transport substances to and from the leaf Xylem: - Transports water into the leaf to be used by mesophyll cells in photosynthesis - ↳Also for transpiration from stomata Phloem: - Transports sucrose & amino acids around the plant 5. What are the 2 minerals and functions for plants and what happens when it is deficient? 1. Magnesium: - Function: Needed to make chlorophyll - Deficiency: Causes yellowing between the veins of leaves (Chlorosis) 2. Nitrate: - Function: Needed to make amino acids - Deficiency: Causes stunted growth and yellowing of leaves Name: Description: ...
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