A. Correct → In frogs, the special venous connection between liver and intestine is called the hepatic portal system.
B. Incorrect → There are ten pairs of cranial nerves arising from the brain of frog.
C. Correct → In female frogs, the uterus and oviduct open separately in the cloaca.
D. Incorrect → In frogs, the midbrain consists of the optic lobes.
The hindbrain consists of cerebellum, and medulla oblongata.
E. Correct → In frogs, a triangular structure called sinus venosus joins the right atrium.
Thus, correct statements are (A), (C) and (E)
