Question

Make a flow chart of invertebrates in the kingdom Animalia, based upon their characteristic features.

Answer 1

Hint: Kingdom Animalia includes multicellular organisms that are eukaryotic in origin. They depend on their external sources for their food; therefore they are referred to as heterotrophs. Invertebrates are the animals lacking backbone.

Complete answer:
Invertebrates can be classified on the basis of their level of organization, body symmetry, body cavity, body layers, etc.
-Levels of Organization
Some invertebrates have cellular levels of organization, that is the cells occur as loose aggregate performing various specialized functions. While some exhibit tissue level of organization that is the cells performing similar functions are grouped together to form tissues.
-Body layers
Invertebrates may be diploblastic or triploblastic. Diploblastic organisms consist of two main layers ectoderm (outer layer) and endoderm (inner layer) while triploblastic organisms consist of three main layers ectoderm (outer layer), mesoderm (middle layer) and endoderm (inner layer).
-Body symmetry
Some of the organisms show asymmetry means they cannot be divided into two equal parts along the central line while others exhibit symmetry, that is they can be divided into two equal parts showing either radial or bilateral symmetry along the central line.
-Body Cavity/Coelom
Invertebrates can be: Acoelomate, lacking true coelom or body cavity or pseudocoelomates, having false coelom or body cavity that is not of mesodermal origin or they may be coelomate possessing a true coelom.

Following is a flow chart of invertebrates in the kingdom Animalia, based upon their characteristic features:

Note: Invertebrates are the animals lacking inner skeleton or the backbone. The animal kingdom presently comprises approximately 97 percent invertebrates. Hydra, sponges, sea stars, snails are some of the common examples of invertebrates.