Question

Some salient features and phyla of organisms are given below. Select the option which shows correct combination of organism, its phylum and salient features.

(a)	Hydra	Coelenterata	Bilateral symmetry	Cnidoblasta present
(b)	Planaria	Platyhelminthes	Bilateral symmetry	High regeneration capacity
(c)	Ancylostoma	Annelida	Bilateral symmetry	Elongated and worm shape
(d)	Octopus	Mollusca	Radial symmetry	External skeleton of shell present

Answer 1

The correct option is:

(b)

Planaria

Platyhelminthes

Bilateral symmetry

High regeneration capacity

Explanation:

Hydra shows radial symmetry, Ancylostoma is an aschelminth. Octopus shows bilateral symmetry and also lacks an external skeleton of shell.