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Water hyacinth floats on water surface. ...

Water hyacinth floats on water surface. Explain.

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Water hyacinth (Eichornia crassipes) has spongy petioles which enclose a lot of air in its aerecnchyma . Air makes the plant lighter than water so that it is able to float on surface of water.
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Knowledge Check

  • When a ship floats on water

    A
    it displaces no water
    B
    the mass of water displaced is equal to the mass of the ship
    C
    the mass of water displaced is lesser than the mass of the ship
    D
    the mass of water displaced is greater than the mass of the ship
  • Ice floats on water because

    A
    its density is less than that of water
    B
    crystal structure of ice has empty space
    C
    Both (a) and (b)
    D
    None of the above
  • The object which floats on water is

    A
    gold ring
    B
    sand
    C
    sawdust
    D
    sugar
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