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What is correct about the following sate...

What is correct about the following satement
(a) Portion of spectrum between 500-800 nm is PAR
(b) Mg, Ca, Cl have prominent role in photolysis of water
In cyclic photophosphorylation, `O_(2)` and `NADPH` are not produced

A

a true, b, c false

B

b true, a, c false

C

a, b true, c false

D

a, b false, c true

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the statements provided in the question regarding photosynthesis, we will evaluate each statement step by step. ### Step 1: Evaluate Statement (a) **Statement:** Portion of spectrum between 500-800 nm is PAR. **Analysis:** - PAR stands for Photosynthetically Active Radiation, which is the range of light wavelengths that photosynthetic organisms can use for photosynthesis. - The correct range for PAR is approximately 400-700 nm. - Since 500-800 nm does not fully encompass the PAR range and includes wavelengths that are not effective for photosynthesis, this statement is **false**. ### Step 2: Evaluate Statement (b) **Statement:** Mg, Ca, Cl have a prominent role in the photolysis of water. **Analysis:** - Photolysis of water is the process where water molecules are split into oxygen, protons, and electrons during photosynthesis. - The minerals involved in this process include manganese (Mn), calcium (Ca), and chloride (Cl). - Magnesium (Mg) does not play a direct role in the photolysis of water. Therefore, since Mg is incorrectly included in this statement, it is also **false**. ### Step 3: Evaluate Statement (c) **Statement:** In cyclic photophosphorylation, O2 and NADPH are not produced. **Analysis:** - Cyclic photophosphorylation is a process that occurs in the light reactions of photosynthesis where electrons are cycled back to the photosystem. - In this process, oxygen (O2) is not produced, nor is NADPH generated. Instead, ATP is produced. - This statement is **true** because it accurately describes the outcomes of cyclic photophosphorylation. ### Conclusion - Statement (a) is false. - Statement (b) is false. - Statement (c) is true. Thus, the correct answer is that statements A and B are false, while statement C is true. ---
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