During the field trip a group of students collected some organisms with following characters. Help them to identify the phyla of those organisms.
a) Dorsoventrally flattened and leaf like body.
b) Jelly tike body with eight ciliated combplates.
c) Body covered with calcareous shell.
d) Spiny skinned body with radial symmetry.

During a field trip Raju has some organisms with the following characters. Help him to identify the phyla of those organisms. a) Metameically segmented body. b) Body covered with calcareous shell. c) Dorso-ventrally flattened leaf like body. d) Body divided into head, thorax and abdomen.

During a seashore visit, a student collected two organisms. Observing the morphology, it is clearthat the organisms are radially symmetrical. One of them shows bioluminescene. a) To which phylum does this organism belong? b) Identify the possible phyla to which the other organism can be included. c) Which distinctive feature ofthis organism will help you to categorize it into a particular phylum?

Mention a single word for the following. a) Sexes are not separate. b) Body wall with three layers. c) File like rasping organs in Mollusca. d) Segmentation of animal body. e) The property of a living organism to emit light. f) Alternation of generation in Cnidarians.