The different cell junctions found in tissues are
(i) Tight junctions are regions where plasma membrane of adjacent epithelial cells are held close together. They check the movement of material between then.
(ii) Gap junctions are meant for chemical exchange between adjacent cells.
(iii) Adhering junctions perform connecting function to keep neighbouring cells together.
The two identifying features of an adult male frog are as follows/p>
(a) Vocal Sacs These are loose skin folds on throat of male frogs for producing louder croak.
(b) Nuptial Pad This copulatory pad present on the first digit of the forelimb of male frog and helps in closing female during amphelexus.
The digestive system of frog is made of the following parts. Arrange them in an order beginning from mouth.
Mouth, oesophagus, buccal cavity, stomach, intestine, cloaca, rectum, cloacal aperture.
The correct arrangement of the parts of digestive system in frog is as follows
Mouth $\rightarrow$ Buccal cavity $\rightarrow$ Oesophagus $\rightarrow$ Stomach $\rightarrow$ Intestine $\rightarrow$ Rectum $\rightarrow$ Cloaca $\rightarrow$ Cloacal aperture.
In frog respiration takes place via two means, i.e., skin and lungs.
Cutaneous respiration occrrs through highly vascular moist skin. It takes place in water as well as land.
Pulmonary respiration through lungs. It takes place outside the water.