A. they are small animals
B. they can live inside the vertebrates
C. some of them are unicellular
D. they have no backbones

Correct Answer:

Option D – they have no backbones

Explanation

– The most familiar invertebrates include the Protozoa, Porifera, Coelenterata, Platyhelminthes, Nematoda, Annelida, Echinodermata, Mollusca and Arthropoda.

– Invertebrates are animals that neither possess nor develop a vertebral column, derived from the notochord.

SEE ALSO  Use the diagram below to answer this question. In which plantation are all the trees between the height of 2-4m?

Copyright warnings! Do not copy.