NEET Biology NEET PYQ-Kingdom Plantae

  • question_answer
    In which of the following gametophyte is not independent free-living?         [NEET 2015]

    A) Funaria

    B) Marchantia

    C) Pteris

    D) None of these

    Correct Answer: D

    Solution :

    [d] Gametophyte is phase of life cycle in which the gametes i.e. egg and sperm are produced. In bryophytes (Funaria and Marchantia) fertilisation is dependent on water for the transfer of sperm to the egg. The gametophytes are fertilised outside the body. Therefore they have independent free-living gametophyte.
    In this respects Pteridophyta (Pteris) are similar to bryophytes i.e. they still have free-living gametophytes.  Pinaceae (Pinus) has well developed gametophyte in which sperm cells are fertilised with egg cell within the ovule. Hence option [d] is correct.
    Option [d] is correct because Pinus does not have independent and freely living gametophyte but is dependent on sporophyte.


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