In frog,$fenestra$ $ovalis$ is the
- AAir filled cavity of the middle ear
- BCommunication between the pharynx and the tympanic cavity
- CExternal opening of tympanic cavity which is covered by the tympanic membrane
- DOpening in the auditory capsule which separates the middle ear from internal ear
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Similar Questions
Match the description given in column $I$ with their examples given in column $II$ and choose the correct option.
Column $I$ (Description) Column $II$ (Example) $A$. Aquatic respiratory organ $I$. Skin $B$. Organ which acts as urogenital duct $II$. Ureter and opens into the cloaca $C$. $A$ small median chamber $III$. Cloaca that is used to pass faecal matter,urine and sperms to the exterior $D$. $A$ triangular structure $IV$. Sinus venosus which joins the right atrium and receives blood through vena cava
| Column $I$ (Description) | Column $II$ (Example) |
| $A$. Aquatic respiratory organ | $I$. Skin |
| $B$. Organ which acts as urogenital duct | $II$. Ureter and opens into the cloaca |
| $C$. $A$ small median chamber | $III$. Cloaca that is used to pass faecal matter,urine and sperms to the exterior |
| $D$. $A$ triangular structure | $IV$. Sinus venosus which joins the right atrium and receives blood through vena cava |
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MediumNEET 2025
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