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

The only incorrectly matched pair is:

Phylum	Level of organisation

Select the incorrect statements from the following:
$A$. Digestive system in Platyhelminthes is incomplete.
$B$. Bilateral symmetry is a characteristic feature of adult Echinoderms.
$C$. Pseudocoelom is possessed by Aschelminthes.
$D$. Notochord is persistent throughout life in the class Chondrichthyes.
$E$. Members of class Reptilia maintain a constant body temperature.

Which of the following is properly matched?

Statement $A$: All animals from Phylum $Annelida$ onwards possess a circulatory system.
Reason $R$: Coelomate organization is observed from Phylum $Annelida$ onwards.
Which option is correct for Statement $A$ and Reason $R$?

Which one of the following is a living fossil?