Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Cell the Unit of Life question

2009 · Q61
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Biology
  4. /Cell the Unit of Life
  5. /2009 · Q61

Cell the Unit of Life question

2009 · Q61

NEETBiologyCell the Unit of LifeMCQ+4 / −1
Middle lamella is composed mainly of :
  1. A
    Calcium pectate
  2. B
    Phosphoglycerides
  3. C
    Muramic acid
  4. D
    Hemicellulose
View written solutionFree

Correct answer: A

Middle lamella is mainly composed of calcium pectate. Calcium is deposited in plants cell walls during their formation - it is required for the stability and function of cell membranes and acts as a type of ‘cementing agent’ in the cell walls in the form of calcium pectate’. Calcium pectate is like a glue binding adjacent cells together so if inadequate calcium is not transported during cell formation, tissues become less stable and prone to disintegration.

PreviousNext

More from Cell the Unit of Life

  • Plasmodesmata are :2009 · MCQ
  • Cytoskeleton is made up of :2009 · MCQ
  • Vacuole in a plant cell:2008 · MCQ
  • The two sub-units of ribosome remain united at a critical ion level of :2008 · MCQ
  • In germinating seeds fatty acids are degraded exclusively in the:2008 · MCQ
  • Keeping in view the "fluid mosaic model" for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other (described as flipflop…2008 · MCQ
  • Which one of the following is not a constituent of cell membrane ?2007 · MCQ
  • Biological organization starts with:-2007 · MCQ