Plant Growth and Development

Multiple Choice Questions

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During seed germination its stored food is mobilised by

  • ethylene

  • cytokinin

  • ABA

  • gibberellin

D.

gibberellin

Gibberellin induces aleurone cells to secrete enzyme to break stored food in seed. Cytokinines promote nutrient mobilisation, which helps in the delay of leaf senescence. ABA plays an important role in seed development, maturation and dormancy. Ethylene induces fruit ripening, breaks seed dormancy.

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    Flowering dependent on cold treatment is

    • cryotherapy

    • cryogenics

    • cryoscopy

    • vernalisation

    Answer

    Choose the minor carp from the following

    • Cyprinus carpio

    • Anguilla sp

    • Labeo bata

    • cetanophyrngodon idella

    Answer

    Which one of the following is a growth regulator produced by plants?

    • Naphthalene acetic acid

    • Zeatin

    • 2,4-dichlorophenoxy acetic acid

    • Benzyl aminopurine

    Answer

    Which of the following is called stress hormone?

    • Abscisic acid

    • Auxin

    • Cytokinin

    • Gibberellic acid

    Answer
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    Cellular totipotency was first demonstrated by

    • F C Steward

    • Robert Hooke

    • T Schwann

    • A v Leeuwenhoek

    Answer

    Name of a gaseous plant hormone is

    • IAA

    • gibberellin

    • ethylenes

    • abscisic acid

    Answer

    The discovery of gibberellins is related with one of the following

    • blast disease of rice

    • rust disease of wheat

    • bakane disease of rice

    • early blight disease of potato

    Answer

    Vascular tissue in higher plants develop from which of the following

    • Procambium 

    • Protoderm

    • Periblem

    • Cortex

    Answer
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    A substance that induces dormancy of seed is

    • ABA

    • GA

    • thio-urea

    • cytokinin

    Answer
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