Brassinosteroids are plant steroid hormones that are involved in various developmental processes, including the differentiation of xylem, promotion of cell elongation, and control of cell growth through signal transduction pathways and protein phosphorylation. They act as active transcription factors, inducing mRNA synthesis, thus playing a crucial role in plant growth and development.

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Brassinosteroids Are

Question 33

Multiple Choice

Brassinosteroids are

A) hormones involved in the differentiation of xylem.
B) plant steroid hormones that promote cell elongation.
C) control cell growth through a signal transduction pathway and protein phosphorylation.
D) active transcription factors which induce mRNA synthesis.
E) All of the answers are correct.

Correct Answer: