___________ arrangement of vascular bundle is a characteristic of dicot stem.

  1. Ring
  2. Radial
  3. Centric
  4. Peripheral
Please attempt this question first.

Difficulty Level:


A large number of rounded, parenchymatous cells with large intracellular spaces which occupy the central position of stem constitute the __________.

  1. Lumen
  2. Pith
  3. Cortex
  4. Vascular bundle
Please attempt this question first.

Difficulty Level:


Phloem parenchyma is absent in

  1. Dicot stem
  2. Monocot stem
  3. Vascular bundle
  4. Both A and B
Please attempt this question first.

Difficulty Level:


In dicot leaves the ________ epidermis generally bears more stomata than the _________ epidermis.

  1. Abaxial, adaxial
  2. Adaxial, abaxial
  3. Axial, coaxial
  4. Coaxial, axial
Please attempt this question first.

Difficulty Level:


The tissue between the upper and lower epidermis is called

  1. Chlorophyll
  2. Mesophyll
  3. Cambium
  4. Endodermis
Please attempt this question first.

Difficulty Level:


Mesophyll in dicot leaves has two type of cell namely_________.

  1. Palisade parenchyma and spongy parenchyma
  2. Pith and Protoxylem
  3. Xylem and phloem
  4. Epidermis and endodermis
Please attempt this question first.

Difficulty Level:


Vascular bundles are surrounded by a layer of thick walled ________.

  1. Bundle sheath cells
  2. Cuticle
  3. Casparian strip
  4. Waxy cell
Please attempt this question first.

Difficulty Level:


In monocot leaf

  1. Stomata is present on both surface of epidermis
  2. Mesophyll is not differentiated into palisade and spongy parenchyma
  3. There is no parenchyma
  4. Both A and B
Please attempt this question first.

Difficulty Level:


In grasses certain adaxial epidermal cells along the vein modify themselves into large, empty, colourless cells called ________.

  1. Bark
  2. Bulliform cells
  3. Bundle sheath cells
  4. Spongy mesophyll cells
Please attempt this question first.

Difficulty Level:


Bulliform cells help in

  1. Heat resistance
  2. Minimizing water loss
  3. Maintaining ion balance
  4. Mineral acquisition
Please attempt this question first.

Difficulty Level: