Biological Classification

Multiple Choice Questions

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Entamoeba histolytica differs from Amoeba in absence of 

  • pseudopodia

  • contractile vacuole

  • nucleus

  • ectoplasm

B.

contractile vacuole

Contractile vacuole is a cell organelle related with osmoregulation, ie, removal of excess water and present in free living protozoa like Amoeba and absent in parasitic protozoa like Entamoeba histolytica.

Pseudopodia are locomotory organelles of class Sarcodina or Rhizopoda, eg, Entamoeba, Amoeba.

Nucleus and ectoplasm are present in all protozoans.

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    Contractile vacuole in protozoan Amoeba is meant for

    • respiration

    • excretion

    • locomotion

    • osmoregulation

    Answer

    Most primitive member, in which roots are not present, is

    • Psilotum

    • Rhynia

    • Lycopodium

    • Selaginella

    Answer

    In Whittaker's system of classification, prokaryotes belong to the kingdom

    • Monera

    • Protista

    • Animalia

    • Fungi

    Answer

    Nucleic acid is absent in

    • Virus

    • Viroid

    • Prion

    • Mycoplasma

    Answer
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    Edible part of mushroom is

    • basidiocarp

    • secondary mycelium

    • primary mycelium

    • tertiary mycelium

    Answer

    Which part of an animal virus is not reproduced in multiple copies?

    • Capsid

    • Protein

    • Envelope

    • Ribosome

    Answer

    Thigmotaxis is not shown by

    • Paramecium

    • Amoeba

    • Ascaris

    • Hydra

    Answer

    The process which cannot take place in the absence of viruses is

    • transformation

    • conjugation

    • translocation

    • transduction

    Answer
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    Polyp phase is absent in

    • Hydra

    • Aurelia

    • Physalia

    • Obelia

    Answer
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