9.5.9 General Characteristics of Mammals The name was given by Linnaeus in 1785. The …
9.5.7 Class Reptilia (Latin. Repere; to crawl) Appendages: Either tetrapods and pent…
9.4.1 Fundamental or Basic Characteristics of Chordates All chordates possess three b…
9.4 (a) Phylum Hemichordata (affinities) Hemichordates closely resemble both echinode…
9.3.8 Economic Importance of Arthropods They are both useful as well as harmful to ma…