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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All tissue except ____________ constitute the ground tissue.

  1. Epidermis
  2. Vascular bundles
  3. Both A and B
  4. Cuticle
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In leaves the ground tissue consist of thin walled chloroplast containing cells and is called____.

  1. Mesophyll
  2. Chlorophyll
  3. P250
  4. Chromophore
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The vascular system in plant consist of

  1. Xylem and phloem
  2. Xylem parenchyma and cortex
  3. Epidermis and cortex
  4. None of the above
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In dicotyledonous stem _________ is present between phloem and xylem.

  1. Cork
  2. Cambium
  3. Connecting vessel
  4. Connecting tubes
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The presence of cambium possess the ability to form secondary xylem and phloem tissue and hence are called

  1. Open vascular bundle
  2. Closed vascular bundle
  3. Intermediate vascular bundle
  4. End node vascular bundle
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In monocotyledons the vascular bundle have no ________ present in them.

  1. Xylem
  2. Cambium
  3. Cork
  4. Phloem
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