Which component of Jute, Flax and Hemp are commonly used?

  1. Phloem fibres
  2. Xylem fibres
  3. Sieve tubes
  4. All of the above
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Epidermis in plant is generally

  1. Single layered
  2. Double layered
  3. Triple layered
  4. Present in patches
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Epidermal cells are parenchymatous with __________ amount of cytoplasm lining, the cell wall and _______ vacuole.

  1. Small, large
  2. Large, small
  3. Small, no
  4. Large, no
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A waxy thick layer which prevent water loss is

  1. Cuticle
  2. Guard cell
  3. Epidermis
  4. Stomata
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Cuticle is not found in

  1. Stem
  2. Branches
  3. Leaves
  4. Roots
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Opening and closing of stomata is a function of

  1. Cuticle
  2. Guard cell
  3. Waxy layer
  4. Xylem
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Transpirational rate is controlled by

  1. Xylem
  2. Phloem
  3. Guard cell
  4. Leaves
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The stomatal aperture, guard cell and the surrounding subsidiary cells are together called________.

  1. Stomata
  2. Stomatal apparatus
  3. Stomatal aperture
  4. Cuticle
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In plant stem the epidermal hairs are called

  1. Cilia
  2. Trichomes
  3. Trichoderms
  4. Trichromes
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Trichomes help in

  1. Preventing water loss
  2. Have sensory role
  3. Help in combating grazing animals
  4. None of the above
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