TLS Online TPP Program

#Question id: 23699


The first cell whose entire genome was sequenced was which of the following?

#Life Sciences
  1. H. influenzae in 1995
  2. H. sapiens in 2001
  3. rice in 1955
  4. tobacco mosaic virus
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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?

TLS Online TPP Program

#Question id: 37891

#Plant Biotechnology

In the context of vascular tissue differentiation in vitro, which of the following sucrose concentrations is correctly matched with the type of tissue it predominantly induces? 

TLS Online TPP Program

#Question id: 37892

#Plant Biotechnology

Which of the following statements regarding the molecular basis of tracheary element differentiation is CORRECT? 

TLS Online TPP Program

#Question id: 37893

#Plant Biotechnology

Tracheary element differentiation is considered an irreversible process. What is the primary cytological reason for this?