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Consider the following statements regard...

Consider the following statements regarding photosynthesis
(A) ATP formation during photosynthesis is temed as photophosphorylation
(B) Kranz anatomy pertains to leaf
(C) Reduction of `NADP^(+)` to NADPH occurs during Calvin cycle
(D) In a chlorophyll molecule mangesium is present in phytol tail

A

I and II correct

B

III and IV are correct

C

I and III are correct

D

I and IV correct

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the statements on photosynthesis, we will analyze each statement one by one to determine its correctness. ### Step-by-Step Solution: 1. **Statement (A): ATP formation during photosynthesis is termed as photophosphorylation.** - **Explanation:** Photophosphorylation is the process where light energy is used to convert ADP and inorganic phosphate (Pi) into ATP during photosynthesis. This occurs in the thylakoid membranes of chloroplasts. Therefore, this statement is **correct**. 2. **Statement (B): Kranz anatomy pertains to leaf.** - **Explanation:** Kranz anatomy is a specialized structure found in the leaves of C4 plants, such as maize and sugarcane. It involves a unique arrangement of mesophyll and bundle sheath cells that helps in efficient photosynthesis. Thus, this statement is also **correct**. 3. **Statement (C): Reduction of NADP⁺ to NADPH occurs during the Calvin cycle.** - **Explanation:** While NADPH is indeed used in the Calvin cycle, the reduction of NADP⁺ to NADPH actually occurs during the light-dependent reactions of photosynthesis, not during the Calvin cycle itself. Therefore, this statement is **incorrect**. 4. **Statement (D): In a chlorophyll molecule, magnesium is present in the phytol tail.** - **Explanation:** Magnesium is a central atom in the porphyrin ring of chlorophyll, not in the phytol tail. The phytol tail is a long hydrophobic chain that anchors the chlorophyll molecule in the thylakoid membrane. Thus, this statement is **incorrect**. ### Conclusion: The correct statements regarding photosynthesis are (A) and (B). Therefore, the correct answer is that statements (A) and (B) are true. ### Summary of Correct Statements: - (A) Correct: ATP formation is termed photophosphorylation. - (B) Correct: Kranz anatomy pertains to leaves of C4 plants. - (C) Incorrect: NADP⁺ is reduced to NADPH during light reactions, not the Calvin cycle. - (D) Incorrect: Magnesium is in the porphyrin head, not the phytol tail.
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