Plant Growth and Development

Plant Growth and Development

Easy Questions

Advanced Botany

Plant Growth and Development
Organisms and Populations
Ecosystem
Biodiversity and Conservation
Environmental Issues
Microbes in Human Welfare
Strategies for Enhancement in Food Production
Molecular Basis of Inheritance
Principles of Inheritance and Variation
Sexual Reproduction in Flowering Plants
Reproduction in Organisms
The Living World
Respiration in Plants
Photosynthesis
Mineral Nutrition
Transport in Plants
Cell Cycle and Cell Division
Cell-The Unit of Life
Anatomy of Flowering Plants
Morphology of Flowering Plants
Plant Kingdom
Biological Classification
  1. Photoperiodism was first characterised in :








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    Photoperiodism is the response to duration and timings of light and dark period. It was first characterised in tobacco plant.

    Correct Option: A

    Photoperiodism is the response to duration and timings of light and dark period. It was first characterised in tobacco plant.

  1. Importance of day length in flowering of plants was first shown in








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    Photoperiodism was first studied by Garner and Allard (1920). They observed that “Maryland Mammoth” variety of tobacco could be made to flower in summer by reducing the light hours with artificial darkening. It could be made to remain vegetative in winter by providing extra light.

    Correct Option: B

    Photoperiodism was first studied by Garner and Allard (1920). They observed that “Maryland Mammoth” variety of tobacco could be made to flower in summer by reducing the light hours with artificial darkening. It could be made to remain vegetative in winter by providing extra light.

  1. Treatment of seed at low temperature under moist conditions to break its dormancy is called








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    Treatment of seed at a low temperature under moist conditions to break dormancy is called stratification.

    Correct Option: C

    Treatment of seed at a low temperature under moist conditions to break dormancy is called stratification.

  1. One set of a plant was grown at 12 hours day and 12 hours night period cycles and it flowered while in the other set night phase was interrupted by flash of light and it did not produce flower. Under which one of the following categories will you place this plant?








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    Short day plants require long uninterrupted dark period for flowering. They will not produce flower if night was interrupted by flash of light.

    Correct Option: D

    Short day plants require long uninterrupted dark period for flowering. They will not produce flower if night was interrupted by flash of light.

  1. The pigment, that absorbs red and far red light in plants, is








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    The pigment phytochrome is involved in flowering and many other light-mediated processes. It absorbs red and far red light in plants for photosynthesis.

    Correct Option: C

    The pigment phytochrome is involved in flowering and many other light-mediated processes. It absorbs red and far red light in plants for photosynthesis.