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प्रश्न
Give comparison between the following:
Anatomy of leaf in C3 and C4 plants
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उत्तर
| C3 leaves | C4 leaves | |
| 1. | The leaves do not possess kranz anatomy. | The leaves have kranz anatomy. |
| 2. | Chloroplasts do not have peripheral reticulum. | Chloroplasts have peripheral reticulum. |
| 3. | Chloroplast are of one type (monomorphic) | There are two types of chloroplasts (dimorphic). |
| 4. | Bundle sheath cell usually do not contain chloroplast. | Bundle sheath cells posses promient chloroplast. |
| 5. | In higher plants operating C3 cycle, all the chloroplasts are granal. | There are two types of chloroplasts, granular in mesophy II cells and agranal in bundle sheath cells. |
| 6. | Mesophy II cell perform complete photosynthesis. | Mesophy II cells perform only initial fixation. |
| 7. | Perform photosynthesis only when stomata are open. | Perform photosynthesis even when stomata is closed (from CO2 produced in respiration). |
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संबंधित प्रश्न
By looking at a plant externally can you tell whether a plant is C3 or C4? Why and how?
RuBisCo is an enzyme that acts both as a carboxylase and oxygenase. Why do you think RuBisCo carries out more carboxylation in C4 plants?
Give a comparison between the following:
C3 and C4 pathways
In the maize plant, \[\ce{CO2}\] fixation occurs in both mesophyll and bundle sheath cells. The enzymes involved in these cells for the process respectively are, ______.
The first stable product of CO2 fixation in sorghum is ______.
The first stable product of CO2 fixation in sorghum is ______
PEP is primary CO2 acceptor in ______.
The enzyme that is not found in a C3 plant is ______.
When CO2 is added to PEP, the first stable product synthesised is ______.
Some of these terms/chemicals are associated with the C4 cycle. Explain.
Calvin cycle
Some of these terms/chemicals are associated with the C4 cycle. Explain.
Bundle sheath cells
In what kind of plants do you come across ‘Kranz’ anatomy? To which conditions are those plants better adapted? How are these plants better adapted than the plants which lack this anatomy?
Observe the diagram and answer the following.
- Which group of plants exibits these two types of cells?
- What is the first product of C4 cycle?
- Which enzyme is there in bundle sheath cells and mesophyll cells?
A cyclic process is occurring in C3 plant, which is light dependent, and needs O2. This process doesn’t produce energy rather it consumes energy.
- Can you name the given process?
- Is it essential for survival?
- What are the end products of this process?
- Where does it occur?
Under what conditions are C4 plants superior to C3?
What special anatomical features are displayed by leaves of C4 plants? How do they provide advantage over the structure of C3 plants?
