In the given examples,how many animals are viviparous? Corvus,Columba,Macropus,Pteropus,Calotes,Hemidactylus,Psittacula,Struthio and Macaca.

Which of the following groups are classified as Anamniotes?

Identify the correctly matched pair.

In which of the following are cleidoic eggs found?

Which one of the following is $NOT$ an adaptation in endoparasitism?

Fill in the blanks marked in the classification table of $Vertebrata$ from the choices provided below with respect to $A, B, C, D, E$ and $F$ and choose the correct option:
$I$. Pisces
$II$. Osteichthyes
$III$. Agnatha
$IV$. Gnathostomata
$V$. Chondrichthyes
$VI$. Cyclostomata
$A - B - C - D - E - F$