Biology Past Questions

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1091

The structure that is common in the embryos of mammals, amphibians, birds, fishes and reptiles and which is an evidence of their common ancestry is the

A. eye
B. chorion
C. allantois
D. gill-silts

View Answer & Discuss (17) JAMB 2002

1092

Animals aestivate when the environment in which they live becomes

A. hot and dry
B. cold and wet
C. warm and humid
D. windy and snowy

View Answer & Discuss (5) JAMB 2002

1093

Examples of organisms in which extracellular digestion occurs are?

A. fungus, loranthus and housefly
B. rhizopus, sponges and earthworm
C. roundworm, tapeworm and hydra
D. rhizopus, housefly and hydra

View Answer & Discuss (9) JAMB 2002

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1094

The mammalian erythrocytes differ from the leucocytes at maturity because the erythrocytes are

A. discoid and nucleated
B. discoid and enucleated
C. amoeboid and nucleated
D. amoeboid and enucleated

View Answer & Discuss (7) JAMB 2002

1095

The presence of endoskeleton is characteristic of

A. invertebrata
B. vertebrata
C. insecta
D. coelenterata

View Answer & Discuss (3) JAMB 2002

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