Practice question
Question
Brassinosteroids were first identified in which year?
Explanation
Correct option is C, 1979. In Brassinosteriod problems like this, the accurate statement is 1979; the others are common mix-ups. Not these: A) 1969; B) 1975; D) 1985. Tissue transport questions usually turn on xylem vs phloem, living vs dead cells, or source vs sink.