Plants hormone causing abscission of leaves, senescene, bud dormancy and inhibition of cell division is? A. IAA B. Ethylene C. Cytokinins D. ABA Right Answer: D. ABA Share : December 29, 2017 Hassan Ali Botany Total 0 Votes: 0 0 Tell us how can we improve this Mcqs? Captcha: + = Verify Human or Spambot ? Related Mcqs Check Below -The protein part of enzyme is?Insectivorous plants grow in soil deficient in?The minimum interval time required between application of stimulus and production of response is?