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TLS Online TPP Program

#Question id: 39293

Q. Assertion: Cybridization enables the creation of unique organelle combinations that cannot be produced through sexual reproduction. 
Reason: Somatic fusion allows the mitochondria of one species to be combined with the chloroplasts of another, often resulting in recombinant organellar genomes. 

#Plant Biotechnology
  1. Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
  2. Both Assertion and Reason are true, but Reason is NOT the correct explanation of Assertion.
  3. Assertion is true, but Reason is false.
  4. Assertion is false, but Reason is true.
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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. Auxin1. Inhibition of leaf senescence
B. Cytokinin2. Maturation of somatic embryo
C. Gibberellin (GA)3. Inhibition of axillary bud outgrowth (Apical Dominance)
D. Abscisic Acid (ABA)4. Fruit ripening
E. Ethylene5. 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?