Choose incorrect option w.r.t chloroplast

Options

A. Has enzymes for carbohydrate synthesis
B. Stroma-Light reaction
C. Has enzymes for protein synthesis
D. Thylakoid-Possess photosystem

Answer

To solve the question of choosing the incorrect option with respect to chloroplast, we can follow these steps:

### Step 1: Understand the Function of Chloroplast
Chloroplasts are organelles found in plant cells that are essential for photosynthesis. They contain chlorophyll, which is the pigment responsible for capturing sunlight.

**Hint:** Remember that chloroplasts are involved in photosynthesis and contain chlorophyll.

### Step 2: Identify the Structure of Chloroplast
Chloroplasts are double membrane-bound organelles. They have an inner space called the stroma and contain thylakoids, which are stacked to form structures known as granum.

**Hint:** Focus on the structure of chloroplasts, particularly the roles of stroma and thylakoids.

### Step 3: Analyze the Options
1. **First Option:** "It has enzymes for carbohydrate synthesis."
- This is correct because the stroma contains enzymes necessary for carbohydrate synthesis.

2. **Second Option:** "Stroma, light reaction."
- This is incorrect. The light reaction occurs in the thylakoid membranes, not in the stroma. The stroma is where the dark reaction (Calvin cycle) takes place.

3. **Third Option:** "It has enzymes for protein synthesis."
- This is correct as chloroplasts have their own ribosomes and can synthesize some proteins.

4. **Fourth Option:** "Thylakoids possess the photosystem for trapping the energy of sunlight."
- This is also correct because the thylakoids contain the photosystems that are essential for the light reactions of photosynthesis.

### Step 4: Conclude the Incorrect Option
From the analysis, the incorrect option is the second one: "Stroma, light reaction," since the light reaction occurs in the thylakoid membranes, while the stroma is involved in the dark reaction.

**Final Answer:** The incorrect option is **B: Stroma, light reaction.**