Multiple choice

Which of the following herbicides act by interfering in light reaction of photosynthesis?

P. 2,4-D Q. DCMU R. N-(phosphonomethyl)glycine S. Atrazine

  1. P and Q

  2. P and R

  3. P and S

  4. Q and R

  5. Q and S
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This option is correct because two major classes of herbicides that block photosynthetic electron flow are derivatives of urea and triazine herbicides. 

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