Which of the following characteristic features always holds true for the corresponding group of animals?
| Viviparous | Mamalia |
| Posess a mouth with an upper and lower jaw | Chordata |
| 3-chmbered heart with one incompletely divided ventricle | Reptilia |
| Cartiliginous- endoskeleton | Chondrichthyes |
C.
| 3-chmbered heart with one incompletely divided ventricle | Reptilia |
Except for crocodilians, which have a four-chambered heart, all reptiles have a three-chambered heart consisting of two atria and one ventricle. The chamber called the right atrium receives deoxygenated, or 'spent' blood returning from the body tissues.
Which of the following features is not present in the phylum-Arthropoda?
Metameric segmentation
Parapodia
Jointed appendages
Jointed appendages
Which of the following features is not present in Periplaneta americana?
Indeterminate and radical cleavage during embryonic development
Exoskeleton composed of N-acetylglucosamine
Metamerically segmented body
Metamerically segmented body
The eyes of Octopus and eyes of cat show different patterns of structure, yet they perform a similar function. This is an example of
homologous organs that have evolved due to convergent evolution
homologous organs that have evolved due to divergent evolution
analogous organs that have evolved due to convergent evolution
analogous organs that have evolved due to convergent evolution
Which one of the following characteristics is not shared by birds and mammals?
Breathing using lungs
Viviparity
Warm-blooded nature
Warm-blooded nature
