alleryStart learning →From what source was auxin isolated by Kogl and Smit in 1931?
AMaize grains
BHuman urine
CCoconut milk
DFungal culture
Answer & Solution
Correct answer: B. Human urine
Kogl and Smit isolated auxin from the urine of a person suffering from pellagra.
Keep practising Plant Growth and Mineral Nutrition
Browse all Plant Growth and Mineral Nutrition questions for MHT-CET, or explore more Biology topics.
Related questions
Which concept explains passive uptake due to fixed anions inside cells?Uptake of mineral ions against a concentration gradient is called?Passive absorption of minerals takes place without what?Calcium is a component of which part of the cell wall?Which element is needed for the synthesis of auxin?Brown heart disease results from deficiency of which element?Which element is a constituent of chlorophyll?Microelements are needed only in traces because they act as?