Transport in Plants

Transport in Plants

Easy Questions
Moderate 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. Plants die from prolonged water-logging because








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    Under water logged conditions, roots die due to lack of air for respiration.

    Correct Option: B

    Under water logged conditions, roots die due to lack of air for respiration.

  1. Which of the following plant is found to have minimum transpiration








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    Nerium is a xerophytic plant and has sunken stomata, confined to lower epidermis to reduce the rate of transpiration.

    Correct Option: A

    Nerium is a xerophytic plant and has sunken stomata, confined to lower epidermis to reduce the rate of transpiration.

  1. Stomata open and close due to








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    Turgor pressure is the pressure that develops in a cell due to osmotic diffusion of water inside it and is responsible for pushing the membrane against cell wall. Stomata open under conditions of increased turgor pressure in guard cells and stomata close under conditions of decreased turgor pressure of guard cells. When turgid, they swell and bend outward. As a result, the stomatal aperture opens. When they are flaccid, the tension from the wall is released and stomatal aperture closes.

    Correct Option: D

    Turgor pressure is the pressure that develops in a cell due to osmotic diffusion of water inside it and is responsible for pushing the membrane against cell wall. Stomata open under conditions of increased turgor pressure in guard cells and stomata close under conditions of decreased turgor pressure of guard cells. When turgid, they swell and bend outward. As a result, the stomatal aperture opens. When they are flaccid, the tension from the wall is released and stomatal aperture closes.

  1. Stomata of a plant open due to








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    During day time, due to photosynthesis, malic acid forms, which breaks into H+ and malate. H+ ions move out of guard cells and K+ ions enter forming potassium malate which makes guard cells turgid and stomata opens.

    Correct Option: B

    During day time, due to photosynthesis, malic acid forms, which breaks into H+ and malate. H+ ions move out of guard cells and K+ ions enter forming potassium malate which makes guard cells turgid and stomata opens.

  1. Potometer works on the principle of








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    Potometer : It is an apparatus for measuring the rate of transpiration.

    Correct Option: B

    Potometer : It is an apparatus for measuring the rate of transpiration.