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    7.

    Which of the following is not a valid reason why the morphological species concept can be problematic?

    A

    It can be difficult to distinguish between intraspecific variation and interspecific differences.

    B

    Cryptic species may be morphologically identical but reproductively isolated.

    C

    It requires detailed genetic analysis.

    D

    Morphological traits can be influenced by environmental factors leading to phenotypic plasticity.

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    10.

    Two plants can be conclusively said to belong to the same species if they

    A

    Can reproduce freely with each other and form seeds

    B

    Have more than 90 percent similar genes

    C

    Look similar and possess identical secondary metabolites

    D

    Have same number of chromosomes.

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