Within the chloroplast, there is membranous system consisting of
grana
stroma lamellae
fluid stroma
Choose the correct option.

Options

A. I and II
B. II and III
C. I and III
D. All of these

Answer

**Step-by-Step Solution:**

1. **Understanding Chloroplast Structure**: The chloroplast is a double-membrane-bound organelle found in plant cells. It is responsible for photosynthesis, which is the process by which plants convert light energy into chemical energy.

2. **Components of Chloroplast**: Within the chloroplast, there are three main components that make up its membranous system:
- **Grana**: These are stacks of thylakoids, which are membrane-bound structures where chlorophyll is located. Grana are essential for the light-dependent reactions of photosynthesis.
- **Stroma Lamellae**: These are the connections between the grana. They are also made up of thylakoid membranes and help in the transport of materials between the grana.
- **Fluid Stroma**: This is the fluid-filled space surrounding the grana and stroma lamellae. It contains enzymes, ribosomes, and the chloroplast's DNA, and is where the light-independent reactions (Calvin cycle) occur.

3. **Conclusion**: The correct answer to the question is that the chloroplast contains a membranous system consisting of grana, stroma lamellae, and fluid stroma.

**Final Answer**: The correct option is that the chloroplast consists of grana, stroma lamellae, and fluid stroma.

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