Question

Which types of sense organs are found in frog.

Answer 1

Following sense organs are found in the frog –

1. Cutaneous receptors : Various types of sense organs are found in the skin below the epidermis which are sensory to various stimuli such as touch, cold, heat, light, pain etc.
2. Gustoreceptors : They are few and found on the tongue & in the roof of bucco-pharvngeal cavity. They are sensory’ to taste.
3. Olfactoreceptors : They are found in the nostrils and are sensory to smell.
4. Eyes : They are sensory to light. One pair of eyes are movable situated in the eye orbits on the head. The eyes are large & round. The wall of eye ball is made up of three layers viz. – sclerotic, choroid and retina.
   The 1/3 outer part of sclerotic modifies to form transparent cornea. The image forms on the retina.
5. Ears : The frog bears a pair of ears. Each ear consists of only’ middle ear and internal ear. The external ear is absent in the frog. The ears are meant for hearing and they also maintain body balance. The tympanum is visible from outside.