TLS Online TPP Program
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TLS Online TPP Program
#Question id: 37885
#Plant Biotechnology
Assertion (A): Plant cell and tissue cultures can be maintained indefinitely.
Reason (R): Serial subculturing is performed to transfer tissues to fresh medium to counter nutrient depletion and medium drying.
Select the correct option:
TLS Online TPP Program
#Question id: 37886
#Plant Biotechnology
| Column I (Hormone) | Column II (Function) |
| A. Auxin | 1. Inhibition of leaf senescence |
| B. Cytokinin | 2. Maturation of somatic embryo |
| C. Gibberellin (GA) | 3. Inhibition of axillary bud outgrowth (Apical Dominance) |
| D. Abscisic Acid (ABA) | 4. Fruit ripening |
| E. Ethylene | 5. Release from dormancy (Seeds/Buds) |
TLS Online TPP Program
#Question id: 37887
#Plant Biotechnology
Match the sucrose concentration in Column I with the type of vascular tissue favored in Column II.
| Column I (Sucrose Conc.) | Column II (Differentiation Result) |
| A. 1% | 1. Mostly Phloem |
| B. 2% | 2. Both Xylem and Phloem |
| C. 2.5% – 3.5% | 3. Little Xylem |
| D. 4% | 4. Mostly Xylem |
TLS Online TPP Program
#Question id: 37888
#Plant Biotechnology
Assertion (A): Tracheary element differentiation is considered an irreversible process.
Reason (R): During differentiation, the cells lose their nuclei and cytoplasm, preventing dedifferentiation or redifferentiation.
Select the correct option:
TLS Online TPP Program
#Question id: 37889
#Plant Biotechnology
Consider the following statements regarding vascular differentiation:
1. Auxin is the principal limiting factor for vascular differentiation.
2. Gibberellic Acid (GA) is essential for the differentiation of phloem.
3. Lower levels of NH4+ and NO3- inhibit vascularization.
4. A high Cytokinin : Auxin ratio can promote both xylem and phloem differentiation.
Which of the statements given above are CORRECT?
TLS Online TPP Program
#Question id: 37890
#Plant Biotechnology
In which plant were the TED genes (TED2, TED3, TED4) identified as being expressed during the redifferentiation of mesophyll cells into tracheary elements?