Water hyacinth floats on water surface. explain

do u have ol the answers for the book three men in a boat if yes plzzzzz gimme plzzz its my holiday assigment nd i did not cmplete plzz help me

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An aquatic plant bubbles because it releases oxygen bubbles. The oxygen bubbles float to the surface of the water and get released in to the air. Thats why it floats.
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An aquatic plant bubbles because it releases oxygen bubbles. The oxygen bubbles float to the surface of water and get released into the air.

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becoz of d presenc of aerenchyma it float on water surface
 
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Because air is trapped in it and if air is trapped it will push it up.
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Can you please elaborate
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It flows on water surface as the solution is hypotonic so water molecules uprises This pgenomenon us known as osmosis
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water hyacinth floats in water due to large air cavities in the parenchyma tissue
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Water hyacinth floats in water due to presence of large air cavities in the parenchyma tissue. These specialized parenchyma tissue are called parenchyma. 
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Water hyacinth floats on the water surface due to the presence of air cavities present in its parenchyma. This type of a tissue us called arenchyma and it gives buoyancy to the plant thereby making it float on water
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It is because it has special parenchyma tissue called aerenchyma which gives buoyancy to water hyacinth and results it to float
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this is due to the  soft plant tissues containing air spaces called aerenchyma 
 
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Those has aerenchyma tissues which allow or help them to float on water
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An aquatic plants bubbles because is releases oxygen bubbles . The oxygen bubble float to the surface of the water & get released in to the air . That's why it floats .
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