Give any one difference between each of the following :
(a) Protozoa and Metazoa,
(b) Vertebrate and Invertebrate,
(c) Insecta and Archnida,
(d) Flatworm and Roundworm,
Explain the difference between :
(a) Flowering and non-flowering plants.
(b) Trees and shrubs.
(c) Vertebrate and invertebrate animals.
Difference between invertebrates and vertebrates on the basis of backbone and nervochord and notochord