Multiple Choice Questions

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Which one of the following is not included under in situ conservation?

  • National park

  • Wild life sanctuary

  • Zoological garden

  • Biosphere reserve


C.

Zoological garden

In situ conservation is the conservation of living resources through their maintenance within the natural ecosystems, in which they occur. It includes a comprehensive system of protected areas such as national parks, wildlife sancturies, natural and biosphere reserves etc.

Zoological and Botanical gardens, aquaria, culture collections, seed banks etc., ar established for ex situ conservation.


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The expanded name of MRI is

  • Medical Reserach Instrument

  • Magnetic Resonance Imaging

  • Magnetic Research Institute

  • Medical Resonance Imaging


In spermatogenesis, reduction division of chromosome occurs during conversion of

  • spermatogonia to primary spermatocytes

  • primary spermatocytes to secondary spermatocytes

  • secondary spermatocytes to spermatids

  • spermatids to sperms


Melting of DNA at an elevated temperature (70°C) is primarily due to the breakdown of

  • phosphodiester bonds

  • glycosidic bonds

  • disulphide bonds

  • hydrogen bonds


The carcinoma, a type of cancer, originates from

  • blood

  • connective tissue

  • epithelial tissue

  • lymph gland


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Humoral immunity is mediated by

  • cytotoxic T-cell

  • plasma cell

  • eosinophil

  • neutrophil


The usual source of restriction endonucleases used in gene cloning is from

  • fungi

  • bacteria

  • plants

  • viruses


The important gas which was absent during the formation of Earth is

  • oxygen

  • hydrogen

  • nitrogen

  • carbon dioxide


For a clean environment, which one following is not essential?

  • Producer

  • Consumer

  • Decomposer

  • Polluter


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Homo erectus evolved during

  • Oligocene

  • Pliocene

  • Pleistocene

  • Miocene