New RBI Grade B 2025 Notification will come Soon! Enroll Here

    Question

    Match the following:

    Herbicide                              Mode of action I.      Paraquat                   A.  Seeding shoot growth inhibitor II.     Glyphosate               B.  PS-II inhibitor            III.    Metolachlor              C.Cell membrane disrupters IV.   Pendimethalin         D.EPSP synthase inhibitor V.    Atrazine                    E.  Microtubule inhibitor
    A I-E, II- D, III-B, IV-C, V-A Correct Answer Incorrect Answer
    B I-E, II-D, III-C, IV-B, V-A Correct Answer Incorrect Answer
    C I-A, II-D, III- C, IV-E, V-B Correct Answer Incorrect Answer
    D I-E, II-D, III-C, IV-B, V-A Correct Answer Incorrect Answer

    Solution

    Paraquat is a herbicide that acts as a seeding shoot growth inhibitor, preventing the growth of shoots in newly germinated plants. Glyphosate is an herbicide that acts as an EPSP synthase inhibitor, disrupting the synthesis of amino acids and inhibiting plant growth. Metolachlor is a herbicide that acts as a cell membrane disrupter, interfering with cell division and growth in susceptible plants. Pendimethalin is a herbicide that acts as a microtubule inhibitor, disrupting the formation of microtubules and inhibiting cell division. Atrazine is a herbicide that acts as a PS-II inhibitor, interfering with the photosynthetic electron transport chain and disrupting plant energy production.

    Practice Next

    Relevant for Exams: