J. Ingenhousz's experiment revealed that there was

Options

A. presence of bubbles when an aquatic plant was placed in the dark
B. no presence of bubbles when an aquatic plant placed in sunlight.
C. no presence of bubbles when an aquatic plant placed in dark.
D. both (B) and (C )

Answer

**Step-by-Step Solution:**

1. **Understanding the Experiment**: J. Ingenhousz conducted experiments to study the process of photosynthesis in aquatic plants. He placed these plants in different lighting conditions to observe their behavior.

2. **Observations in Sunlight**: When the aquatic plant was placed in bright sunlight, Ingenhousz observed the formation of small bubbles around the green parts of the plant. These bubbles were identified as oxygen, which is a byproduct of photosynthesis.

3. **Observations in the Dark**: Conversely, when the same aquatic plant was placed in the dark, Ingenhousz noted that there were no bubbles formed. This indicated that the process of photosynthesis, which produces oxygen, does not occur in the absence of light.

4. **Conclusion**: Based on these observations, Ingenhousz concluded that oxygen is produced by aquatic plants only in the presence of light and not in the dark. Therefore, the correct answer to the question is that there is "no presence of bubbles when an aquatic plant was placed in dark."

5. **Final Answer**: The correct option is **C**: no presence of bubbles when an aquatic plant was placed in dark.

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