Assertion: The sight, smell and presence of food in the oral cavity can stimulate secetion of saliva.
Reason: The activities of the gastro-intestinal tract are only under neutral control for proper coordination of different parts.

Options

A. If both assertion and reason are true and reason is the correct explantion of assertion
B. If both assertion and reason are true but reason is not the correct explnantion of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Assertion**: The assertion states that the sight, smell, and presence of food in the oral cavity can stimulate the secretion of saliva. This is true as these sensory inputs act as stimuli that trigger the salivary glands to produce saliva.

2. **Mechanism of Saliva Secretion**: When food is seen or smelled, sensory signals are sent to the brain. The brain then sends signals to the salivary glands, leading to the secretion of saliva. This process is an example of neural control, where the nervous system regulates bodily functions in response to external stimuli.

3. **Understanding the Reason**: The reason provided states that the activities of the gastrointestinal tract (GIT) are only under neural control for proper coordination of different parts. This is not entirely accurate. While neural control is significant, the GIT activities are also regulated by hormonal signals.

4. **GIT Coordination**: The GIT functions through both neural and hormonal controls. Neural signals facilitate the movement of food through peristalsis, while hormones like secretin and gastrin regulate digestive processes. Therefore, the assertion is true, but the reason is false.

5. **Conclusion**: Based on the analysis, the assertion is true while the reason is false. Thus, the correct answer is that the assertion is true, but the reason is false.

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