NEET Biology Solved Question Paper 2009

Multiple Choice Questions

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Cleavage polyembryony occurs in

  • Pinus

  • Mini Cycas

  • Cycas

  • Ephedra

A.

Pinus

Polyembryony is common in gymnosperms. It is because more than one archegonia are fertilized and more than one zygotes are formed. All develop into embryos but only one of them succeeds in developing complete embryo.

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    Initiation codon is

    • UUU

    • UGA

    • AUG

    • UAG

    Answer

    Streptomycin is obtained from

    • Streptomyces griseus

    • S. aureofaciens

    • S. venezuelae

    • S. ramosus

    Answer

    In Pinus, male cone bears a large number of

    • ligules

    • anthers

    • micro- sporophylls

    • mega- sporophylls

    Answer

    Which is always present in photochemical smog?

    • O3

    • CO2

    • SO2

    • CH4

    Answer
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    Lichen is the pioneer vegetation on which succession?

    • Hydrosere

    • Lithosere

    • Psammosere

    • Xerosere

    Answer

    The soil which is transported by wind is known as

    • colluvial

    • eolian

    • aluvial

    • glacial soil

    Answer

    Decomposers are

    • autotrophs

    • autoheterotrophs

    • organotrophs

    • heterotrophs

    Answer

    DNA mutiplication is called

    • translation

    • replication

    • transduction

    • transcription

    Answer
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    DNA element with ability to change position is called

    • cistron

    • transposon

    • intron

    • recon

    Answer