Question:
The first Cytokinin was discovered by ----(A)------ during investigation of callus tissue culture of ------(B)----
The first Cytokinin was discovered by ----(A)------ during investigation of callus tissue culture of ------(B)----
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Kinetin was isolated from tobacco callus by two scientists.
Updated On: Nov 12, 2026
- A- Yabuta and Sumiki ; B- Gibberella fujikuroi
- A- Skoog and Miller ; B- Nicotiana tabacum
- A- Gane ; B- Rice seedlings
- A- Carns and Addicott ; B- Avena
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept
Cytokinins promote cell division and were found during tissue culture work.
Step 2: Recall the discovery
Skoog and Miller grew callus from tobacco pith, Nicotiana tabacum.\nThe callus divided only when a cell division factor, kinetin, was added with auxin.
Step 3: Eliminate others
Yabuta and Sumiki worked on gibberellins and Carns and Addicott on abscisic acid.
Final Answer:
Skoog and Miller worked on Nicotiana tabacum. \[ \boxed{\text{(B) }\text{A- Skoog and Miller ; B- Nicotiana tabacum}} \]
Cytokinins promote cell division and were found during tissue culture work.
Step 2: Recall the discovery
Skoog and Miller grew callus from tobacco pith, Nicotiana tabacum.\nThe callus divided only when a cell division factor, kinetin, was added with auxin.
Step 3: Eliminate others
Yabuta and Sumiki worked on gibberellins and Carns and Addicott on abscisic acid.
Final Answer:
Skoog and Miller worked on Nicotiana tabacum. \[ \boxed{\text{(B) }\text{A- Skoog and Miller ; B- Nicotiana tabacum}} \]
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