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Select the characters not applicable to `C_(3)` plants
(i) Primary `CO_(2)` acceptor is `PEP`
(ii) The plants have RuBisCO
(iii) Initial carboxylation reaction occurs in bundle sheath cells
(iv) Calvin cycle occurs only in bundle sheath cells
(a) iii and iv only
(b) ii, iii and iv only
(c) i and ii only
(d) i, iii and iv only

A

iii and iv only

B

ii, iii and iv only

C

i and ii only

D

i, iii and iv only.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the characteristics not applicable to C3 plants, we will analyze each statement one by one. ### Step-by-Step Solution: 1. **Analyze Statement (i)**: "Primary CO₂ acceptor is PEP." - In C3 plants, the primary CO₂ acceptor is Ribulose bisphosphate (RuBP), not Phosphoenolpyruvate (PEP). PEP is the primary CO₂ acceptor in C4 plants. Therefore, this statement is **not applicable** to C3 plants. 2. **Analyze Statement (ii)**: "The plants have RuBisCO." - C3 plants do contain RuBisCO (Ribulose bisphosphate carboxylase/oxygenase), which is essential for the Calvin cycle. Thus, this statement is **applicable** to C3 plants. 3. **Analyze Statement (iii)**: "Initial carboxylation reaction occurs in bundle sheath cells." - In C3 plants, the initial carboxylation reaction occurs in the mesophyll cells, not in bundle sheath cells. Therefore, this statement is **not applicable** to C3 plants. 4. **Analyze Statement (iv)**: "Calvin cycle occurs only in bundle sheath cells." - The Calvin cycle in C3 plants occurs in the mesophyll cells, not exclusively in bundle sheath cells. Hence, this statement is also **not applicable** to C3 plants. ### Conclusion: Based on the analysis: - Statements (i), (iii), and (iv) are not applicable to C3 plants. - Therefore, the correct answer is **(d) i, iii and iv only**.
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