The pigment Chlorophyll-a is absent in

Options

A. Gymnosperms
B. Bacteria
C. Algae
D. Bryophyta

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks where the pigment chlorophyll-a is absent. We need to analyze each option provided to determine which organism does not contain this pigment.

2. **Analyzing the Options**:
- **Gymnosperms**: These are seed-producing plants that have seeds unprotected by an ovary or fruit. They include conifers and are known to contain chlorophyll, which is essential for photosynthesis. Therefore, chlorophyll-a is present in gymnosperms.

- **Bacteria**: Bacteria are unicellular organisms that belong to the kingdom Monera. Most bacteria do not contain chlorophyll and do not perform photosynthesis. Some bacteria can perform photosynthesis using different pigments, but chlorophyll-a is generally absent. Hence, this is a strong candidate for our answer.

- **Algae**: Algae are a diverse group of photosynthetic organisms that can be found in various environments. Most algae contain chlorophyll-a, which is crucial for their photosynthetic processes. Thus, chlorophyll-a is present in algae.

- **Bryophyta**: This group includes non-vascular plants such as mosses and liverworts. They are green and contain chlorophyll, which allows them to perform photosynthesis. Therefore, chlorophyll-a is present in bryophyta.

3. **Conclusion**: After analyzing all the options, it is clear that chlorophyll-a is absent in **bacteria**.

**Final Answer**: The pigment chlorophyll-a is absent in **bacteria**.

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