c4 or cam ? Which are more effective ? And why CAM plants don't have Kranz anatomy
Asked by dasputemanoj81 | 27th Apr, 2017, 11:37: AM
The C4 pathway is certainly more efficient than the C3 pathway in carbon fixation. The enzyme responsible is RUBISCO (Ribulose 1, 5- bisphosphate). In C3 plants, carbon dioxide and oxygen is both present. Maximum of this enzyme is carboxylated whereas some RUBISCO is oxygenated too. So, it requires the process of photorespiration which is a waste. In C4 plants, the inner cells get only carbon dioxide in the form of malate. This avoids the oxygenation process and, hence, makes this pathway more efficient.
Kranz anatomy is not seen in CAM plants because the stomata in the leaves remain shut during the day to reduce evaporation and transpiration, but open at night to collect CO2 which is vice-versa in the case of C4 plants. As we know photosynthesis processes of C4 plants are divided between mesophyll and bundle sheath cells.
Answered by Sivanand Patnaik | 27th Apr, 2017, 02:13: PM
- Is photorespiration present at low co2 concentration in c3 and c4 plants?
- Is photorespiration present at low light intensity in c3 and c4 plants? Is photorespiration present at high light intensity in c3 and c4 plants?
- explain c4 pathway
- Please answer the following question with explanation
- What is the first stable compound formed from CO2 fixation in C4 plants?
- What is the anatomical structure of the leaves of C4 plants known as?
- Give two examples of C4 plants.
- How can a C4 plant leaf section be distinguished from that of a C3 plant leaf section?
- Which is the primary CO2 acceptor in C4 plants?
- Why does the Calvin cycle not occur in mesophyll cells?
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