Multiple Choice Questions

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The basic unit of classification is

  • Species

  • Genus

  • Family

  • Phylum


A.

Species

The basic unit of classification is species. It is the lowest category of classification. It is a group of closely related individuals with similar morphological, anatomical, biochemical and cytological characters. It is a group of naturally interbreeding population with ability to produce fertile offsprings. Individuals of a species share a common gene pool. Species is reproductively isolated, thus genetically closed system. Species has the real existence in nature. The term 'species was given by John Ray, an English naturalist.


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One animal that does not perform locomotion is

  • Sycon

  • Nereis

  • Sepia

  • Euglena


Glycogenolysis involves

  • Conversion of sugar into glycogen

  • Oxidation of Sugar

  • Conversion of glycogen into sugar

  • Conversion of glycogen into fat


Heterocysts are present in

  • Riccia

  • Ulothrix

  • Albugo

  • Nostoc


The phrase "Omnis cellula e cellula' was given by

  • Virchow

  • Pasteur

  • Schleiden

  • Brown


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In Ruscus, the stem is a

  • Phyllode

  • Cladode

  • Offset

  • Sucker


Nucleic acid is absent in

  • Virus

  • Viroid

  • Prion

  • Mycoplasma


Apoenzyme is

  • Protein

  • Carbohydrate

  • Vitamin

  • Amino acid


In most fungi, cell wall is chiefly made of

  • Cellulose

  • Chitin

  • Protein

  • Lipid


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Animals of class-Mammalia have

  • Seven cervical vertebrae

  • Seven cranial nerve

  • Single ventricular chamber

  • Fourteen cervical vertebrae