Which of the following is not found in frog?

Which of the following is not found in frog?

Answer : a

Hints & Solutions:

Thyroid gland is absent in frog. 

• Four types of cartilage are found in larynx of Rabbit: a thyroid cartilage, a cricoid cartilage & a pair of arytenoid cartilage .  

• Number of cartilage found in man is 9 ; 3 paired  & 3 unpaired . 

• Paired: Arytenoid,Corniculate & Cuneiform.

•  Unpaired: Epiglottis, Thyroid & Cricoid.(@ETC)

• Frog has 3 cartilages : an unpaired cricoid & a paired arytenoid cartilage.

• Pterohyal & sterohyal muscles help in pulmonary respiration in frog.