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Which of these features cannot help us differentiate between C3 and C4 plants?
- a)Presence of Kranz anatomy
- b)Presence of photorespiration
- c)Presence of bundle sheath
- d)Presence of chloroplasts
Correct answer is option 'D'. Can you explain this answer?
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Which of these features cannot help us differentiate between C3and C4p...
Understanding C3 and C4 Plants
C3 and C4 plants are two types of plants that utilize different pathways for photosynthesis. Differentiating between them involves examining specific anatomical and physiological features.
Features That Differentiate C3 and C4 Plants
- Presence of Kranz Anatomy
C4 plants exhibit Kranz anatomy, characterized by a specific arrangement of chloroplasts within bundle sheath cells that helps in the efficient capture of CO2. C3 plants do not have this specialized structure.
- Presence of Photorespiration
C3 plants undergo photorespiration, a process that can decrease photosynthetic efficiency, especially under high oxygen concentrations. C4 plants have adapted mechanisms to minimize this process, making them more efficient in high light and temperature conditions.
- Presence of Bundle Sheath
C4 plants have a distinct layer of bundle sheath cells where the Calvin cycle occurs, effectively separating it from the initial fixation of CO2. C3 plants do not have this adaptation, as they conduct all photosynthetic processes in the mesophyll cells.
Why Presence of Chloroplasts is Not a Differentiating Feature
- Presence of Chloroplasts
Both C3 and C4 plants contain chloroplasts, which are essential for photosynthesis. Thus, the presence of chloroplasts is not a distinguishing feature between these two types of plants as they share this characteristic.
In summary, while Kranz anatomy, photorespiration, and bundle sheath structures help differentiate C3 from C4 plants, the presence of chloroplasts is common to both, making it an ineffective criterion for differentiation.
C3 and C4 plants are two types of plants that utilize different pathways for photosynthesis. Differentiating between them involves examining specific anatomical and physiological features.
Features That Differentiate C3 and C4 Plants
- Presence of Kranz Anatomy
C4 plants exhibit Kranz anatomy, characterized by a specific arrangement of chloroplasts within bundle sheath cells that helps in the efficient capture of CO2. C3 plants do not have this specialized structure.
- Presence of Photorespiration
C3 plants undergo photorespiration, a process that can decrease photosynthetic efficiency, especially under high oxygen concentrations. C4 plants have adapted mechanisms to minimize this process, making them more efficient in high light and temperature conditions.
- Presence of Bundle Sheath
C4 plants have a distinct layer of bundle sheath cells where the Calvin cycle occurs, effectively separating it from the initial fixation of CO2. C3 plants do not have this adaptation, as they conduct all photosynthetic processes in the mesophyll cells.
Why Presence of Chloroplasts is Not a Differentiating Feature
- Presence of Chloroplasts
Both C3 and C4 plants contain chloroplasts, which are essential for photosynthesis. Thus, the presence of chloroplasts is not a distinguishing feature between these two types of plants as they share this characteristic.
In summary, while Kranz anatomy, photorespiration, and bundle sheath structures help differentiate C3 from C4 plants, the presence of chloroplasts is common to both, making it an ineffective criterion for differentiation.
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Community Answer
Which of these features cannot help us differentiate between C3and C4p...
- C4 plants show Kranz anatomy in which bundle sheath cells surrounds the vascular bundles.
- They lack photorespiration and show presence of bundle sheaths.
- However, chloroplasts are present in both types of plants.
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Which of these features cannot help us differentiate between C3and C4plants?a)Presence of Kranz anatomyb)Presence of photorespirationc)Presence of bundle sheathd)Presence of chloroplastsCorrect answer is option 'D'. Can you explain this answer?
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