Which one of the following characteristics is not shared by birds and mammals?
Breathing using lungs
Which one of the following is not a characteristic of phylum-Annelida?
Closed circulatory system
Ventral nerve cord
Five Kingdom system of classification suggested by RH Whittaker is not based on
presence or absence of a well-defined nucleus
mode of reproduction
Mode of nutrition
Complexity of body organisation
Which one of the followings in birds, indicates their reptilian ancestry?
Scales on their hind limbs
Four chambered heart
Two special chambers crop and gizzard in their digestive tract
Eggs with a calcareous shell
Metagenesis refers to
Presence of different morphic forms
Alternation of generation between asexual and sexual phases of an organism
Occurrence of a drastic change in form during post-embyonic development
Presence of a segmented body and parthenogenetic mode of reproduction