Name the class in which :
(a) digits end up in nail and claws ,
(b) hair are present as exoskeleton.

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

Digits with nails, claws or hooves are present in

Animals in which digits are both webbed and clawed

Animals in which digits are both webbed and clawed

Animals in which digits are both webbed and clawed

Name two classes chordates in which clawed digits are present

Name the protein which is present in nail -

Which vitamin is present in nail & hair?

Which chemical is present in chitinous exoskeleton?

Name the class of angiosperms in which : (a) reticular venation is present , (b) leaves show parallel venation