Question

Chapter project 10: Table of characteristics of animal groups Fill in the blanks in the table below. In the description column, briefly and clearly describe the characteristics. Then in the animal groups column, indicate which groups (use sponges, ctenophora, cnidaria, fatworms, rotiſers, nematodes, annelids, mollusks, arthropods, echinoderms, and chordates) possess those features. Characteristic Description Animal groups (include all) Symmetry None Radial Bilateral Type of digestive cavity Gastrovascular cavity Tube in a tube (don't include description here) Number of tissue layers None Two Three Body cavity Acoelomate Pseudocoelomate Eysoslomate (coelomate) Protostome or deuterostome just list characteristics of protostome or deuterostome) Protostome Deuterostome

Answer 1

Characteristics	Description	Animal Group
Symmetry
None	--------------
Radial	In this type of symmetry, any plane passing through the central axis of the body divides the organisms into two equal halves.	Sponge, Cnidaria,Ctenophora, Echinoderms,
Bilateral	In bilateral symmetry, the body is divided into two equal halves by a midian longitudinal plane and each division shows a mirror image of each other.	Flatworms,Mollusks, Arthropods, Rotifers, Nematodes,Annelids, Chodates
Number of tissue layers
None		Sponge
Two		Ctenophora, Cnidaria
Three		Flatworms, Rotifers, Nematodes, Annelids, Mollusks, Arthropods, Echinoderms, Chordates
Body Cavity
Acoelomate	Absence of body cavity in between the body wall and the digestive tract.	Sponges, Ctenophora, Cnidaria , Flatworms,
Pseudocoelomate	They possess a fluid filled body cavity which is not fully lined by mesodermal Epithelium.	Rotifers, Nematodes.
Eucoelomate	Eucoelomate animals contains a fluid filled body cavity which is lined by mesodermal Epithelium I.e. true coelom.	Annelids, Mollusks, Arthropods, Echinoderms, Chordates.
Protostomes or Deuterostomes
Protostomes	Blastopore develops into the mouth. Undergo spiral cleavage. No archenteron development. composed of solid ventral nerve cord.	Arthropods, Nematodes, Annelids, Flatworms, Mollusks ,Rotifers.
Deuterostomes	Blastopore develops into the anus. Under go radial cleavage. Archenteron found. composed of hollow nerve cord.	Echinodermata, Chordates