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Questions and Answers
Which of the following is a type of auxin hormone?
Which of the following is a type of auxin hormone?
- 2,4-D (correct)
- Kinetin
- Zeatin
- Thidiazuron
What is the chemical structure of the cytokinin hormone, $6$-benzylaminopurine (BAP)?
What is the chemical structure of the cytokinin hormone, $6$-benzylaminopurine (BAP)?
- $\ce{C5H9N5}$ (correct)
- $\ce{CH2=CH2}$
- $\ce{CH2OH-CH2-CH2-COOH}$
- $\ce{C6H5-CH2-NH2}$
Which of the following is NOT a type of cytokinin hormone?
Which of the following is NOT a type of cytokinin hormone?
- Indole-3-acetic acid (IAA) (correct)
- Thidiazuron
- Zeatin
- Isopentenyladenine
What is the chemical structure of the cytokinin hormone, $6$-furfurylaminopurine (kinetin)?
What is the chemical structure of the cytokinin hormone, $6$-furfurylaminopurine (kinetin)?
Which of the following is NOT a plant hormone?
Which of the following is NOT a plant hormone?
Which of the following is not a type of auxin hormone?
Which of the following is not a type of auxin hormone?
Which of the following synthetic auxin hormones is commonly used as a herbicide?
Which of the following synthetic auxin hormones is commonly used as a herbicide?
Among the listed auxin hormones, which one is commonly associated with tissue culture and root initiation?
Among the listed auxin hormones, which one is commonly associated with tissue culture and root initiation?
Which of the following plant hormones is primarily involved in mediating plant responses to biotic stress?
Which of the following plant hormones is primarily involved in mediating plant responses to biotic stress?
Among the listed plant hormones, which one functions in regulating cell division and differentiation?
Among the listed plant hormones, which one functions in regulating cell division and differentiation?
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Study Notes
Cytokinins
- Zeatin is represented by the symbol Z
- Zeatinriboside is represented by the symbol ZR
- Isopentenyladenine is represented by the symbol iP
- 6-Benzylaminopurine is represented by the symbol BAP
- 6-Furfurylaminopurine is also known as kinetin
- Thidiazuron is represented by the symbol TDZ
Auxins
- Main auxins include indole-3-acetic acid (IAA), indole-3-butyric acid (IBA), and 1-naphthaleneacetic acid (NAA)
- 2,4-Dichlorophenoxyacetic acid is represented by the symbol 2,4-D
- 2,4,5-Trichlorophenoxyacetic acid is represented by the symbol 2,4,5-T
- Picloram, Dicamba, and p-chlorophenoxyacetic acid (CPA) are also classified as auxins
Other Plant Hormones
- Brassinosteroids, Salicylic acid, Jasmonic acid, Peptides, Polyamines, and Strigolactones are classified as new generation plant hormones
- Strigolactones include 5-deoxystrigol
- Ethylene is represented by the formula CHâ‚‚=CHâ‚‚
- Gibberellin is represented by the symbol GA₃
- Abscisic acid is represented by the symbol ABA
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