Animals are classified into vertebrates and invertebrates, based on the presence of _______.
The animals (Kingdom Animalia) are mainly grouped under two categories
(a) bilaterally symmetrical and radially symmetrical
(b) coelomate and acoelomate
(c) aquatic and terrestrial
(d) vertebrates and invertebrates
Explain the difference between :
(a) Flowering and non-flowering plants.
(b) Trees and shrubs.
(c) Vertebrate and invertebrate animals.