Which of the following are true regarding the head of a toad?
Which of the following are true regarding the head of a toad?
The correct options are
A The anterior blunt end of the head is called snout.
B A pair of nostril or external nares lie on the prominence of the head.
C The mouth is bounded by upper and lower jaws.
The head of a toad is semicircular and dorsoventrally flattened. The anterior blunt end of the head is called snout. The semicircular mouth lies in the anterior part of the head and extends from one eardrum to the other. The mouth is bounded by upper and lower jaws. The jaws are without any teeth. Within the mouth cavity lies a sticky tongue attached in front but free behind. A pair of nostril or external nares lie on the prominence of the head. It has two eyes which are covered by upper and lower eyelids and a third eyelid known as a nictitating membrane. It has an eardrum or tympanic membrane which receives the sound vibration and sends them to the internal ear.
A
The anterior blunt end of the head is called snout.
B
A pair of nostril or external nares lie on the prominence of the head.
C
The mouth is bounded by upper and lower jaws.
The head of a toad is semicircular and dorsoventrally flattened. The anterior blunt end of the head is called snout. The semicircular mouth lies in the anterior part of the head and extends from one eardrum to the other. The mouth is bounded by upper and lower jaws. The jaws are without any teeth. Within the mouth cavity lies a sticky tongue attached in front but free behind. A pair of nostril or external nares lie on the prominence of the head. It has two eyes which are covered by upper and lower eyelids and a third eyelid known as a nictitating membrane. It has an eardrum or tympanic membrane which receives the sound vibration and sends them to the internal ear.
