Which one of the following figures shows radial symmetry?

What is common between parrot, platypus, and kangaroo?

Assertion $A$: Fishes possess gills,fins,and scales.
Reason $R$: Fishes are a form of taxon.
Which option is correct for Assertion $A$ and Reason $R$?

Choose the correct option for the following statements:
$(i)$ Birds are oviparous / viviparous animals showing internal fertilization.
$(ii)$ In cartilaginous fishes,gill slits are without operculum / with operculum.

Match the following columns and select the correct option.

Column-$I$	Column-$II$
$(a)$ Gregarious,polyphagous pest	$(i)$ Asterias
$(b)$ Adult with radial symmetry and larva with bilateral symmetry	$(ii)$ Scorpion
$(c)$ Book lungs	$(iii)$ Ctenoplana
$(d)$ Bioluminescence	$(iv)$ Locusta

$(a)\quad(b)\quad(c)\quad(d)$

Which of the following pairs are correctly matched?

Animals	Morphological features
$(i)$ Crocodile	$4$-chambered heart
$(ii)$ Sea urchin	Parapodia
$(iii)$ Obelia	Metagenesis
$(iv)$ Lemur	Thecodont