Who for the first time speculated the presence of organ-forming substances in plants,now called hormones?

  • A
    Darwin
  • B
    Went
  • C
    Yabuta
  • D
    Sachs

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Which of the following substances act as a key growth regulator?

What are plant growth regulators also known as?

Explain the discovery of plant growth regulators.

Classical experiments on growth were performed by

Phytohormones are:

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