Sites of Ingestion and Egestion in the Alimentary Canal

Steps:

• Recall ingestion is the intake of food into the digestive system at the mouth.
• Recall egestion is the expulsion of undigested waste from the anus.
• Identify diagram labels: assume standard labeling where 2 marks the mouth and 3 marks the anus.
• Match processes to labels: ingestion at 2, egestion at 3.

Why C is correct:

• C pairs egestion with the anus (3) and ingestion with the mouth (2), aligning with biological definitions of these processes.

Why the others are wrong:

• A incorrectly assigns egestion to 1 (likely esophagus) and ingestion to 3 (anus).
• B swaps the sites, placing ingestion at 1 (not mouth) and egestion correctly at 3.
• D is incomplete and provides no valid pairing.

Final answer: C