NEET Biology Photosynthesis in Higher Plants Question Bank Assertion and Reason

  • question_answer
    Assertion : Plants utilizing first RuBP in\[C{{O}_{2}}\] fixations are called \[{{C}_{3}}\]plants. Reason : Plants utilizing first PEP in \[C{{O}_{2}}\]fixations are called \[{{C}_{4}}\]plants.

    A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion

    B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion 

    C) If the assertion is true but the reason is false

    D) If both the assertion and reason are false

    E) If the assertion is false but reason is true

    Correct Answer: B

    Solution :

    Plants that utilize primarily RuBP to fix \[C{{O}_{2}}\], which results in the formation of the three-carbon compound 3-PGA, are called\[{{C}_{3}}\]plants. Hatch and Slack proposed a new pathway of \[C{{O}_{2}}\]fixation via the carboxylation of PEP. Because the products are four-carbon compounds, plants exhibiting this pathway are referred to as \[{{C}_{4}}\]plants.


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