Looking for classes? Ksquare Career Institute, Bengaluru →
$Peripatus$ is a connecting link between
A
Coelenterata and Porifera
B
Ctenophora and Platyhelminthes
C
Mollusca and Echinodermata
D
Annelida and Arthropoda
Detailed Solution
$Peripatus$ (the walking worm, phylum Onychophora) shows characters of two phyla.
Annelid characters: a soft, worm-like body with a thin cuticle, unjointed stumpy legs, segmentally arranged nephridia and simple eyes.
Arthropod characters: claws on the legs, tracheae for respiration, a haemocoel and a dorsal tubular heart with ostia.
Because it combines the features of both groups, it is regarded as a connecting link between Annelida and Arthropoda.
Hence the answer is Annelida and Arthropoda.
Annelid characters: a soft, worm-like body with a thin cuticle, unjointed stumpy legs, segmentally arranged nephridia and simple eyes.
Arthropod characters: claws on the legs, tracheae for respiration, a haemocoel and a dorsal tubular heart with ostia.
Because it combines the features of both groups, it is regarded as a connecting link between Annelida and Arthropoda.
Hence the answer is Annelida and Arthropoda.