Trichonympha is a symbiont in the alimentary canal of

Which one of the following groups of three animals is correctly matched with their one characteristic morphological feature?

$Option$	Animals	Morphological features
$(a)$	Scorpion,spider,cockroach	Ventral solid central nervous system
$(b)$	Cockroach,locust,Taenia	Metameric segmentation
$(c)$	Liver fluke,sea anemone,sea cucumber	Bilateral symmetry
$(d)$	Centipede,prawn,sea urchin	Jointed appendages

How many of the following phyla exhibit diploblastic and tissue-level organization?
Porifera,Coelenterata (Cnidaria),Ctenophora,Platyhelminthes,Aschelminthes

Match the following columns:

Column-$I$	Column-$II$
$I.$ Platyhelminthes	$p.$ Malpighian tubules
$II.$ Aschelminthes	$q.$ Renette cells
$III.$ Arthropoda	$r.$ Flame cells
$IV.$ Annelida	$s.$ Nephridia

Animals that are metamerically segmented with a true coelom and a closed circulatory system belong to $:-$

Which type of asexual reproduction is $NOT$ observed in organisms belonging to the phylum Protozoa?