In the given statements (i-iv) i) The chlorophyll a is yellow green in colour and chlorophyll b is blue green in colour. ii) Both photosystems absorb more amount of red wavelength. iii) In moderate light, the chloroplasts arrange themselves with their flat surfaces perpendicular to the incident light while during strong illumination, they are parallel to the incident light. iv) The stroma of chloroplast is responsible for trapping the light energy and also for synthesis of ATP and NADPH. Find out the correct statements

Options

A. (ii), (iii) and (iv)
B. (ii) and (iii)
C. (i), (ii) and (iii)
D. (ii) and (iv)

Answer

To determine the correct statements from the given options, let's analyze each statement step by step:

### Step 1: Analyze Statement i
**Statement:** The chlorophyll a is yellow green in color and chlorophyll b is blue green in color.

**Analysis:**
- Chlorophyll a is actually blue-green in color, while chlorophyll b is yellow-green. Therefore, this statement is incorrect.

### Step 2: Analyze Statement ii
**Statement:** Both photosystems absorb more amount of red wavelength.

**Analysis:**
- Photosystems I and II primarily absorb light in the red wavelength range (approximately 600-700 nm). This statement is correct.

### Step 3: Analyze Statement iii
**Statement:** In moderate light, the chloroplasts arrange themselves with their flat surfaces perpendicular to the incident light while during strong illumination, they are parallel to the incident light.

**Analysis:**
- This statement is accurate. In moderate light, chloroplasts orient themselves to maximize light absorption, while in strong light, they adjust to minimize damage from excess light by aligning parallel to the light source. Thus, this statement is correct.

### Step 4: Analyze Statement iv
**Statement:** The stroma of chloroplast is responsible for trapping the light energy and also for synthesis of ATP and NADPH.

**Analysis:**
- The stroma does not trap light energy; that function is performed by the photosystems (I and II). The stroma is involved in the synthesis of ATP and NADPH, but it is not responsible for trapping light energy. Therefore, this statement is incorrect.

### Conclusion:
The correct statements are:
- Statement ii: Correct
- Statement iii: Correct

### Final Answer:
The correct statements are ii and iii.

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