NEET Biology question
Not in NEET syllabus
Which one of the following statements is/are correct? I. Frenulum is the fold by which tongue is attached to the floor of mouth or oral cavity. II. Lower surface of the tongue has little projection which bears taste buds. III. Pharynx is the common passage for food and air. IV. Sphincter of Oddi guards and regulates the opening of stomach into duodenum. V. Colon has 3 parts, an ascending, a transverse and a descending part, and the latter opens into the rectum.
Solution
Statement I is correct (the frenulum anchors the tongue to the floor of the oral cavity). Statement II is false -- taste buds are borne on papillae on the upper (dorsal) surface of the tongue, not its lower surface. Statement III is correct (the pharynx is the shared passage for food and air). Statement IV is false --
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