Question

Auriculo-ventricular valve of frog is

• A. Single and two flapped
• B. Two, two flapped and three flapped
• C. Single and four flapped
• D. Double and double flapped

Answer 1

The correct option is C Single and four flapped

The ventricle has a thick muscular and spongy wall having numerous longitudinal clefts, separated from each other by muscular projections called columnae carnae. The two auricles open into a single ventricle chamber by an auriculo-ventricular aperture which is guarded by two pairs of auriculoventricular valves. Hence there are single and four flapped valves.

So the correct answer is 'Single and four flapped'.