A student placed man and house fly in the following taxonomic categories. Some of them are wrongly placed. Identify and correct them.

The names of some organic compounds are given below. Identify the worng ones and cor-rect them.

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.

36 bricks are to be placed in layers. In what all ways we can arrange them?

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?