Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2010

  • question_answer Which part of the root is most active in absorption of phosphate?

    A)  Root cap                            

    B)  Meristematic zone

    C)  Root hairs                          

    D)  Root apex

    Correct Answer: C

    Solution :

    Root hairs are tiny, hair-like outgrowth of some surface cells of plant roots that greatly increases the area available for the absorption of water and other materials such as minerals. It is a delicate structure, which survives for a few days only and does not develop into a root. Root hair cells are found just behind the root tip where they are continually being formed. They grow out into the soil for a few millimetres to produce the root hair. Each root hair is made of a single cell. At the root tip mitosis cell division is very active making new cells for growth to replace the root hair cells that die.

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