Metagenesis refers to (a) occurrence of a drastic change in form during postembryonic development (b) presence of a segmented body and parthenogenetic mode of reproduction (c) presence of different morphic forms (d) alternation of generation between ...
Choose the correct statement. (a) All mammals are viviparous. (b) All cyclostomes do not possess jaws and paired fins. (c) All reptiles have a threechambered heart. (d) All pisces have gills covered by an operculum.
Which of the following represents order of ‘Horse’? (a) Perissodactyla (b) Caballus (c) Ferus (d) Equidae