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प्रश्न
Succulents are known to keep their stomata closed during the day to check transpiration. How do they meet their photosynthetic CO2 requirements?
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उत्तर
Succulent (water-storing) plants such as cacti and euphorbias fix CO2 into the organic compounds using PEP carboxylase at night when the stomata are open.
\[\ce{PEP + CO2 -> OAA}\]
\[\ce{OAA ->[Conversion] Malic acid}\]
The. organic compound (malic acid) accumulates throughout the night and is decarboxylated during the day to produce CO2.
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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?
By looking at which internal structure of a plant can you tell whether a plant is C3 or C4? Explain.
Give a comparison between the following:
C3 and C4 pathways
Give comparison between the following:
Anatomy of leaf in C3 and C4 plants
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, ______.
In case of C4 pathway, the first step is
The first stable product of CO2 fixation in sorghum is ______.
The first stable product of CO2 fixation in sorghum is ______
Some of these terms/chemicals are associated with the C4 cycle. Explain.
Hatch slack pathway
Some of these terms/chemicals are associated with the C4 cycle. Explain.
Calvin cycle
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?
Name the two important enzymes of C4 pathway, and explain their role in fixing CO2?
Which of the following statements about RuBisCO is true?
