NEET Biology Solved Question Paper 2010

Multiple Choice Questions

Advertisement
Zigya App

Powdery mildew of crops are caused by

  • bacteria

  • Ascomycetes

  • Basidiomycetes

  • Phycomycetes

B.

Ascomycetes

Mildew diseases are caused by a group of fungal parasites called Ascomycetes. It is of two types powdery mildew and downy mildew.

Powdery mildews are caused by external parasites which grow superficially on the leaves, green stems and fruits and form powdery or dusty patches which are filled with white conidia. Downy mildews are caused by internal obligate parasites which are characterised by downy growth.

  • Switch
    • Advertisement

    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

    Answer

    Desert can be converted into green land by planting

    • oxylophytes

    • psammophytes

    • halophytes

    • trees

    Answer

    Major protein of connective tissue is

    • myosin

    • collagen

    • melanin

    • keratin

    Answer

    A prokaryotic cell lacks

    • true nucleus

    • nuclear membrane

    • membrane bound organelles

    • All of the above

    Answer
    Advertisement

    Blackman's law of limiting factor is applied to

    • respiration

    • transpiration

    • photorespiration

    • photosynthesis

    Answer

    Induction of cell division and delay in senescence is done by

    • cytokinins

    • auxins

    • GA

    • Co-A

    Answer

    Funaria gametophyte is

    • dioecious

    • heteroecious

    • autoecious

    • monoecious and autoecious

    Answer

    Nodules with nitrogen-fixing bacteria are found in

    • cotton

    • gram

    • mustard

    • wheat

    Answer
    Advertisement

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

    • Hooker

    • Linnaeus

    • Bentham

    • Darwin

    Answer