Multiple Choice QuestionsWhich 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 |
Which one of the following characteristics is not shared by birds and mammals?
Breathing using lungs
Viviparity
Warm-blooded nature
Warm-blooded nature
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
C.
analogous organs that have evolved due to convergent evolution
The analogous organs are not anatomically similar structures through they perform similar structure though they perform similar functions, Hence, analogous structures are a result of convergent evolution different structures evolving for the same function and hence, having similarity.
Homologous organs developed along different due to adaptations to different needs. This is divergent evolution and the structures are homologous.
A senentary sea anemone gets attached to the shell lining of hermit crab. The association is
ectoparasitism
symbiosis
commensalism
commensalism
A jawless fish, which lays eggs in fresh water and whose ammocoetes larvae after metamorphosis return to the ocean is:
Eptatretus
Myxine
Neomyxine
Neomyxine
The chitinous exoskeleton of arthropods is formed by the polymerisation of
Keratin sulphate and chondraitin sulphate
D-glucosamine
N-acetyl glucosamine
N-acetyl glucosamine
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
Occurrence of a drastic change in form during post-embyonic development
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
Mode of nutrition
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