Q148 of 525 Page 254

Name the class in which
(a) Syrinx is present; (b) Pneumatic bones are present.

(a) Syrinx is present in aves; (b) Aves have pneumatic bones;

146

Name the reptile in which heart is four chambered.

147

What is literal meaning of reptiles?

149

Name the national bird and national animal of India.

150

Name the chordate class of flying worm blooded animals in which teeth are absent.

Name the class in which(a) Syrinx is present; (b) Pneumatic bones are present.