Oral Grove is the funnel like depression on the pellicle
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Answer:
Autonomic nervous system.
Explanation:
Autonomic nervous system may be defined as the division of the peripheral nervous system. Autonomic nervous system has been divided into parasympathetic nervous system and sympathetic nervous system.
The autonomic nervous divides is involved in controlling the respiration activity, digestive system and cardiovascular activity. This efferent nervous system controls the different type of the muscles like cardiac muscle, smooth muscle and the functioning of glands.
Thus, the answer is autonomic nervous system.
From the table, we can see that P and Q represent water. (Option B)
<h3>What does P and Q represent?</h3>
We know that the liquid range of water is 0 - 100 degrees Celsius. Within this temperature range, water exists as a liquid substance.
Looking at the table we can see that the temperatures of P and Q are 50 and 100 degrees Celsius respectively hence both P and Q represent water.
Learn more about temperature:brainly.com/question/11464844?
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