Multiple Choice Questions

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Desert can be converted into green land by planting

  • oxylophytes

  • psammophytes

  • halophytes

  • trees


B.

psammophytes

Psammophytes grow on sand and gravel. These plants may convert desert areas into greenland.


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Major protein of connective tissue is

  • myosin

  • collagen

  • melanin

  • keratin


Funaria gametophyte is

  • dioecious

  • heteroecious

  • autoecious

  • monoecious and autoecious


The usage of binomial names, for plant species was accepted by all after the publication of the work by

  • Hooker

  • Linnaeus

  • Bentham

  • Darwin


Nodules with nitrogen-fixing bacteria are found in

  • cotton

  • gram

  • mustard

  • wheat


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Powdery mildew of crops are caused by

  • bacteria

  • Ascomycetes

  • Basidiomycetes

  • Phycomycetes


Induction of cell division and delay in senescence is done by

  • cytokinins

  • auxins

  • GA

  • Co-A


In which kingdom, would you classify the archaea and nitrogen-fixing organisms. If the five-kingdom system of classification is used?

  • Protista

  • Monera

  • Plantae

  • Fungi


Blackman's law of limiting factor is applied to

  • respiration

  • transpiration

  • photorespiration

  • photosynthesis


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A prokaryotic cell lacks

  • true nucleus

  • nuclear membrane

  • membrane bound organelles

  • All of the above