Cleidoic eggs are a characteristic feature of which of the following?

Which of the following pairs are correct?

Animal	Morphological Feature
$(i)$ Crocodile	$4$-chambered heart
$(ii)$ Sea cucumber	Echinodermata (Water vascular system)
$(iii)$ Obelia	Metagenesis
$(iv)$ Lemur	Thecodont

Match the following columns and select the correct option.

Column-$I$	Column-$II$
$(a)$ Coelenterata	$(i)$ Parapodia
$(b)$ Arthropoda	$(ii)$ Radula
$(c)$ Annelida	$(iii)$ Malpighian tubules
$(d)$ Mollusca	$(iv)$ Cnidoblasts

Which of the following pairs is correctly matched?

$A$: Annelids,arthropods,and molluscs are protostomial coelomates.
$R$: All three phyla include members with bilateral symmetry and a true coelom.

The term "phylum" in animal classification was coined by