Green algae are considered as ancestors of higher plants due to their resemblance with higher plants in :-

Options

A. Pigments
B. Cell wall
C. Stored food
D. All of the above

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks why green algae are considered ancestors of higher plants. We need to analyze the similarities between green algae and higher plants based on specific characteristics.

2. **Analyzing Pigments**:
- Green algae contain chlorophyll pigments, specifically chlorophyll A and B.
- Higher plants also contain chlorophyll, which is essential for photosynthesis and is located in the chloroplasts.
- **Conclusion**: The presence of similar pigments indicates a resemblance between green algae and higher plants.

3. **Examining Cell Walls**:
- The cell walls of green algae are primarily made up of cellulose.
- Similarly, the cell walls of higher plants are also composed of cellulose.
- **Conclusion**: The similarity in the composition of cell walls further supports the relationship between green algae and higher plants.

4. **Looking at Stored Food**:
- Green algae store food in the form of starch, which includes amylose and amylopectin.
- Higher plants also store carbohydrates as starch, which is produced during photosynthesis and stored in various parts of the plant (roots, stems, leaves).
- **Conclusion**: The method of food storage is another point of similarity.

5. **Final Conclusion**: Since all three characteristics—pigments, cell walls, and stored food—show significant resemblance between green algae and higher plants, we conclude that green algae are considered ancestors of higher plants due to all of the above factors.

**Final Answer**: All of the above.

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