CBSE  /  Class 11  /  Biology  /  Structural Organisation in Animals

  • 1. 
    Pith is very well developed in

  • monocot root and monocot srem
  • monocot root and dicot root
  • dicot root and monocot stem
  • monocot root and dicot stem

  • 2. 
    Which of the following helps in the curling of the leaf surface?

  • Bulliform cells
  • Xylem tissue
  • Palisade parenchyma
  • Bundle sheath cells

  • 3. 
    Walls of sclerenchyma are

  • rigid
  • lignified
  • pectinised
  • suberised

  • 4. 
    Fusifrom initial cells of cambium from

  • vascular rays
  • tracheary elements
  • ray parenchyma
  • phloem parenchyma

  • 5. 
    Closed vascular bundles lacks

  • pith
  • xylem
  • cambium
  • xylem vessels

  • 6. 
    After the secondary growth, the oldest layer of secondary phloem in a dicot stem is located

  • just outside the vascular cambium
  • just inside the vascular cambium
  • just inside the vascular phloem
  • just outside the secondary xylem

  • 7. 
    The innermost layer of cortex which shows casparian thickenings in its cells is called as

  • epidermis
  • endodermis
  • pericycle
  • exodermis

  • 8. 
    Vessels differ from tracheids

  • in being living
  • in being derived from a single cell
  • in that they consist of vertical row of cells with cross walls dissolved
  • in coducting water and minerals

  • 9. 
    Endodermis cells are rich in

  • cellulose
  • starch grains
  • fibers
  • resins and wax
Report Question
warning
Practice More On Structural Organisation in Animals
Quiz 1 Quiz 2
access_time
  Time