NEET Biology Solved Question Paper 2009

Multiple Choice Questions

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Flash of light in dark inhibits flnwering in

  • SDP

  • LDP

  • LSDP

  • DNP

A.

SDP

Short day plant needs short-light period and uninterrupted long night period and a flash of light in dark inhibits flowering in short day plant (SDP).

LDP or Long Day Plants flower when the days are longer. Light period is very critical in these plants.

LSDP are Lond Day Short Plants.

DNP stands for 2, 4- Dinitrophenol.

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    Stomata open or close due to the ion

    • Ca2+

    • Na+

    • K+

    • Cu+

    Answer

    Internodal elongation is stimulated by

    • auxin

    • cytokinin

    • gibberellin

    • phenol

    Answer

    Wilting of leaves at noon and their recovery toward evening is known as

    • incipient wilting

    • temporary wilting

    • midday desiccation

    • permanent wilting

    Answer

    The specific character of C4  plants is

    • bulliform cells

    • Kranz anatomy

    • parallel venation

    • isobilateral leaf

    Answer
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    Which of the following induces and promotes cell division?

    • ABA

    • Auxin

    • Cytokinin

    • Gibberellin

    Answer

    Artificial application of auxins like IAA, IBA and NAA to unpollinated pistils can form

    • fruits with much flash

    • larger fruits

    • sweet fruits

    • seedless fruits

    Answer

    Which of the following has multiflagellate sperms?

    • Equisetum

    • Riccia

    • Lycopodium

    • Anthoceros

    Answer

    Which of the following clogs the cavity of the xylem vessels?

    • Tylosis

    • Cystolith

    • Hydathode

    • Raphide

    Answer
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    In the electron transport chain, in terminal oxidation, the cytochrome, which donates electrons to O2 is

    • cytochrome- b 

    • cytochrome- c

    • cytochrome- a3

    • cytochrome- a

    Answer