NEETBotanyPlant - Growth and Development
During his experiments on the internodal segments of tobacco stems, F. Skoog observed that the callus proliferated only if the nutrient medium was supplemented with:
Options
- AAuxins along with extracts of vascular tissues, yeast extract, coconut milk or DNA
- BOnly auxins, without the need for any other complex organic extracts
- CAuxins along with gibberellic acid and abscisic acid
- DExtracts of vascular tissues, yeast extract, coconut milk or DNA, without auxins
Correct answer
A. Auxins along with extracts of vascular tissues, yeast extract, coconut milk or DNA
Step-by-step solution
According to NCERT, F. Skoog and his co-workers observed that from the internodal segments of tobacco stems, the callus (a mass of undifferentiated cells) proliferated only if, in addition to auxins, the nutrient medium was supplemented with one of the following: extracts of vascular tissues, yeast extract, coconut milk or DNA. Answer: Auxins along with extracts of vascular tissues, yeast extract, coconut milk or DNA