The most important natural abscission-accelerating factor in senescing leaves appears to be
A. Indole acetic acid (IAA)
B. Gibberellin
C. Abscisic acid
D. Ethylene
Answer: Option D
This Question Belongs to Biology GK Chapter Wise >> Plant Anatomy And Physiology
Related Questions on Plant Anatomy and Physiology
A. Cinnamomum - Amoora association
B. Bischofia - Dillenia association
C. Shorea - Lagerstroemia association
D. Mesua - Michelia association
Which of the following react with haemoglobin, forming methemoglobin which will not take up oxygen?
A. Nitrates
B. Nitrites
C. Carbides
D. Oxides
Internally, hydathode shows a group of loosely arranged parenchymatous cells called as
A. Epiderm
B. Epithelium
C. Ampithecium
D. Epithem
Join The Discussion