Chlorophyll a appears ____ in colour and chlorophyll b appears____ in colour in the chromatogram.

Options

A. bluish green, yellowish green
B. yellowish green, bluish green
C. blue, blue
D. green,green

Explanation

**Step-by-Step Solution:**

1. **Identify the pigments**: The question asks about two types of chlorophyll: chlorophyll a and chlorophyll b.

2. **Understand chlorophyll a**: Chlorophyll a is the primary photosynthetic pigment involved in the light reactions of photosynthesis. Its molecular formula is C55H72O5N4Mg, and it has an extra methyl group that allows it to absorb red light.

3. **Determine the color of chlorophyll a**: Due to its ability to absorb red light, chlorophyll a appears bluish green in color.

4. **Understand chlorophyll b**: Chlorophyll b has a slightly different molecular formula (C55H70O6N4Mg) and contains an extra oxygen atom, which gives it an aldehyde group. This structure allows chlorophyll b to absorb blue and violet light.

5. **Determine the color of chlorophyll b**: As a result of its absorption characteristics, chlorophyll b appears yellowish green in color.

6. **Summarize the findings**: Based on the above information, chlorophyll a appears bluish green, and chlorophyll b appears yellowish green in a chromatogram.

7. **Choose the correct answer**: The correct answer to the question is that chlorophyll a appears bluish green and chlorophyll b appears yellowish green.

**Final Answer**: Chlorophyll a appears bluish green in color and chlorophyll b appears yellowish green in color in the chromatogram.

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