Question

Study the different organisms given.

Ascaris, Taenia, Sycon, Spongilla, Pleurobrachia, Fasciola, Ctenolana, Wuchereria, Planaria, Admasia

How many of the given organisms belong to Porifera, Cnidaria, Ctenophore, Platyhelminthes and Aschelminthes?

Options	Porifera	Cnidaria	Ctenophora	Platyhelminthes	Aschelminthes
(a)	$1$	$2$	$2$	$3$	$2$
(b)	$3$	$1$	$2$	$2$	$2$
(c)	$2$	$1$	$2$	$3$	$2$
(d)	$2$	$2$	$1$	$3$	$2$

• A. A
• B. B
• C. C
• D. D

Answer 1

The correct option is C C

Correct answer is C.

Porifera are sessile, multicellular marine or freshwater invertebrates containing porous vascular system. Examples are Sycon (calciferous sponges) and Spongilla.

Adamsia is a genus of sea anemones (Cnidarians) and posses polyp ad medusa forms of structure.

Ctenophores or comb jellies are marine invertebrates and use cilia for swimming. Examples are Pleurobrachia (sea gooseberry) and Ctenoplana

Platyhelminthes are flatworms and have a flattened, bilateral, unsegmented slender bodies. Examples are Taenia, Fasciola and Planaria.

Aschelminthes or nematodes are the round worms. They are slender, rounded, bilaterally symmetrical, unsegmented, pseudocoel forming parasitic worms. Examples include Ascaris and Wuchereria.