Give comparison between c3and c4pathwY
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Posted by Tushal Dugga 4 years, 8 months ago
- 4 answers
Gautam Prajapati 4 years, 8 months ago
Gautam Prajapati 4 years, 8 months ago
Yogita Ingle 4 years, 8 months ago
C3 Plants |
C4 Plants |
The primary product obtained is 3- phosphoglyceric acid. | The primary product is a 4 carbon compound, oxaloacetate. |
Occurs in mesophyll cells. | Occurs in mesophyll and bundle sheath cells. |
These can be found in cool and wet areas. | These can be found in dry areas. |
95% of the green plants are C3 plants. | 5% of the green plants are C4 plants. |
The rate of photorespiration is high. | Photorespiration is absent. |
Leaves of these plants show Kranz anatomy. | Leaves of these plants do not show Kranz anatomy. |
Abundant in temperate conditions. | Abundant in tropical conditions. |
Bundle sheath cells do not contain chloroplasts. | Bundle sheath cells contain chloroplasts. |
Carbon dioxide fixation occurs only once. | Carbon dioxide fixation occurs twice. |
All the steps of dark reaction take place in mesophyll cells. | The initial steps are carried out in mesophyll cells and the subsequent steps are carried out in bundle-sheath cells. |
The optimum tem[perature for photosynthesis is very low. | The optimum temperature for photosynthesis is high. |
They have higher amount of crude proteins. | They have lesser amount of crude proteins. |
These evolved 2.5 billion years ago. | Evolved 12 million years ago. |
Carbon dioxide fixation is slow. | Carbon dioxide fixation is faster. |
Photosynthesis is inhibited when stomata are closed. | Photosynthesis occurs even when stomata are closed. |
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