NEET Biology Photosynthesis in Higher Plants Question Bank \[{{C}_{4}}\] \ CAM \ Photorespiration

  • question_answer
    Tropical plant like sugarcane show high efficiency of\[C{{O}_{2}}\]fixation because of [BHU 1978, 82; MP PMT 1986, 87, 90]

    A) Calvin cycle

    B) Hatch and Slack cycle

    C) EMP pathway

    D) TCA cycle

    Correct Answer: B

    Solution :

    In 1965 kortschak, Hart and Burr working with \[{{C}^{14}}{{O}_{2}}\] on sugarcane leaves found \[{{C}_{4}}\] dicarboxylic acid, malate and asparlate to be the major labelled products in very short periods of photosynthesis. This observation was confirmed by M.D. Hatch and C.R., Slack in 1967. The Hatch-slack pathway, as this alternative \[C{{O}_{2}}\] fixation is called, has been found to occur in tropical and sub-tropical grasses and some dicotyledons.


You need to login to perform this action.
You will be redirected in 3 sec spinner