The companion cells help in maintaining the ________ in the sieve tube.

  1. Temperature gradient
  2. Cellulose gradient
  3. Pressure gradient
  4. Ion gradient
Please attempt this question first.

Difficulty Level:


Resin, latex and mucilage are found in

  1. Phloem parenchyma
  2. Xylem parenchyma
  3. Phloem pits
  4. None of the above
Please attempt this question first.

Difficulty Level:


Phloem parenchyma is absent in most of the

  1. Dicotyledons
  2. Monocotyledons
  3. Desert plants
  4. None of the above
Please attempt this question first.

Difficulty Level:


Phloem fibres are made up of

  1. Parenchymatous cells
  2. Sclerenchymatous cells
  3. Collenchymatous cells
  4. None of the above
Please attempt this question first.

Difficulty Level:


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

  1. Phloem fibres
  2. Xylem fibres
  3. Sieve tubes
  4. All of the above
Please attempt this question first.

Difficulty Level:


Epidermis in plant is generally

  1. Single layered
  2. Double layered
  3. Triple layered
  4. Present in patches
Please attempt this question first.

Difficulty Level:


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
Please attempt this question first.

Difficulty Level:


A waxy thick layer which prevent water loss is

  1. Cuticle
  2. Guard cell
  3. Epidermis
  4. Stomata
Please attempt this question first.

Difficulty Level:


Cuticle is not found in

  1. Stem
  2. Branches
  3. Leaves
  4. Roots
Please attempt this question first.

Difficulty Level:


Opening and closing of stomata is a function of

  1. Cuticle
  2. Guard cell
  3. Waxy layer
  4. Xylem
Please attempt this question first.

Difficulty Level: