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Compensation Point
Compensation Point
2.5
Compensation Point
Definition of Compensation Point
The level of light intensity when the rate of respiration equals to the rate of photosynthesis.
Light Intensity and Attainment of Compensation Point
A t the compensation point, the rate of photosynthesis is the same as the rate of respiration.
At the compensation point:
The amount of carbon dioxide released during cellular respiration is equal to the amount of carbon dioxide used for photosynthesis.
The amount of oxygen released during photosynthesis is equal to the amount of oxygen for cellular respiration.
If the rate of photosynthesis and rate of cellular respiration remain at the compensation point,the plants do not grow normally. This is because:
The rate of photosynthesis is low.
All glucose produced from photosynthesis are oxidised during cellular respiration.
The energy produced from cellular respiration only sufficient to support the daily use of plants.
No excessive energy for normal growth.
No excess storage food in plants.
Comparison between Photosynthesis and Respiration in Plants
Similarities
Differences
Photosynthesis
Aspect
Respiration
Green plants and photosynthetic bacteria.
Organisms involved
All living organisms.
Happens in the cells containing chlorophyll.
Type of cells
Happens in all cells.
Anabolism process happens, which is the synthesis of glucose using carbon dioxide and water.
Type of metabolism
Catabolism process happens, which is the breakdown of glucose to produce energy.
Chloroplast.
Site
Mitochondria.
Carbon dioxide and water.
Reaction substances
Oxygen and glucose.
Glucose.
Products
Energy.
Carbon dioxide and water.
By-products
Carbon dioxide and water.
Light energy is absorbed and converted into chemical energy.
Energy involvement
Chemical energy is converted to ATP and heat energy is released.
Needs light.
Light requirement
Does not need light.
Compensation Point
2.5
Compensation Point
Definition of Compensation Point
The level of light intensity when the rate of respiration equals to the rate of photosynthesis.
Light Intensity and Attainment of Compensation Point
A t the compensation point, the rate of photosynthesis is the same as the rate of respiration.
At the compensation point:
The amount of carbon dioxide released during cellular respiration is equal to the amount of carbon dioxide used for photosynthesis.
The amount of oxygen released during photosynthesis is equal to the amount of oxygen for cellular respiration.
If the rate of photosynthesis and rate of cellular respiration remain at the compensation point,the plants do not grow normally. This is because:
The rate of photosynthesis is low.
All glucose produced from photosynthesis are oxidised during cellular respiration.
The energy produced from cellular respiration only sufficient to support the daily use of plants.
No excessive energy for normal growth.
No excess storage food in plants.
Comparison between Photosynthesis and Respiration in Plants
Similarities
Differences
Photosynthesis
Aspect
Respiration
Green plants and photosynthetic bacteria.
Organisms involved
All living organisms.
Happens in the cells containing chlorophyll.
Type of cells
Happens in all cells.
Anabolism process happens, which is the synthesis of glucose using carbon dioxide and water.
Type of metabolism
Catabolism process happens, which is the breakdown of glucose to produce energy.
Chloroplast.
Site
Mitochondria.
Carbon dioxide and water.
Reaction substances
Oxygen and glucose.
Glucose.
Products
Energy.
Carbon dioxide and water.
By-products
Carbon dioxide and water.
Light energy is absorbed and converted into chemical energy.
Energy involvement
Chemical energy is converted to ATP and heat energy is released.
Needs light.
Light requirement
Does not need light.
Chapter : Structure and Leaf Function
Topic : Compensation Point
Form 5
Biology
View all notes for Biology Form 5
Related notes
Leaf Structure
Main Organ for Gaseous Exchange
Main Organ for Transpiration
Main Organ for Photosynthesis
Organisation of Plant tissue
Meristematic Tissues and Growth
Growth Curves
Main Inorganic Nutrients
Organ for Water and Mineral Salts Uptake
Diversity in Plant Nutrition
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