The basic source of energy for all Organism is

Options

A. Green plants
B. Temperature
C. Water
D. Solar energy

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks for the basic source of energy for all organisms.

2. **Understanding Energy Sources**: Recognize that energy is essential for all life forms. Organisms require energy to grow, reproduce, and carry out various life processes.

3. **Role of the Sun**: The sun is the primary source of energy for the Earth. It provides solar energy, which is crucial for life.

4. **Photosynthesis in Plants**: Green plants, known as producers, utilize solar energy through the process of photosynthesis. They convert sunlight into chemical energy stored in the form of glucose.

5. **Energy Transfer in Ecosystems**: The energy captured by plants is then transferred through the food chain. Herbivores consume plants, and carnivores or omnivores consume herbivores, creating a cycle of energy transfer.

6. **Conclusion**: Based on the understanding that solar energy is the starting point for energy flow in ecosystems, we conclude that the basic source of energy for all organisms is solar energy.

7. **Final Answer**: The correct answer is solar energy.

---