Sense Organs in Frogs — NEET Biology
📚 Practice ConceptFrog has different types of sense organs, namely organs of touch (sensory papillae), taste (taste buds), smell (nasal epithelium), vision (eyes) and hearing (tympanum with internal ears). Out of these, eyes and internal ears are well-organised structures and the rest are cellular aggregations around nerve endings. Eyes in a frog are a pair of spherical structures situated in the orbit in skull. These are simple eyes (possessing only one unit). External ear is absent in frogs and only tympanum can be seen externally. The ear is an organ of hearing as well as balancing (equilibrium).
Which of the following statements regarding the sense organs and feeding in frogs are NOT correct? S1: The tympanum in frogs is an external structure that functions only for receiving sound signals. S2: Nictitating membrane covers the bulged eyes, providing protection while the frog is in water. S3: Frogs possess well-organized internal ears, but external ears are absent. S4: The organs of touch, taste, and smell in frogs are simple cellular aggregations around nerve endings, unlike eyes and internal ears which are well-organized structures. S5: Maxillary teeth in frogs are primarily used for masticating food before swallowing.
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