MCQ
Choose correct group which concern with any one system in cockroach and frog.
- ✓Spiracles, lungs, trachea, circular muscles, nostrils.
- BOstia, sinus venous, cloaca, anal circus
- CFallopian tube, ovary, stomach, skin, appendages, mouth parts.
- DGanglia, eyes, brain liver, testis, bifid tongue