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11. Which is/are the naturally occurring plant auxins?
A. Indole acetic acid (IAA)
B. Naphthaleneacetic acid (NAA)
C. 2,4-dichlorophenoxyacetic acid
D. All of the above
12. Which is/are the disadvantage/(s) of using IAA in plant cell culture media?
A. It is unstable in solution
B. Gets easily oxidized
C. Conjugated to inactive form by plant cells
D. All of the above
13. To maintain the pH of the culture
A. organic acid such as citric, fumaric, malic and succinic acid is used
B. synthetic buffers such as Tris, MES or HEPS are used
C. both (a) and (b)
D. ammonium salts are used
14. Which of the following is not a cytokinin?
A. 2,4-dichlorophenoxyacetic acid
B. 6 benzylaminopurine
C. Zeatin
D. Kinetin
15. Which of the following is not an auxin?
A. Indole acetic acid (IAA)
B. Naphthalenacetic acid (NAA)
C. zeatin
D. Indole butyric acid
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