About 25 of the 92 natural elements are known to be essential to life. Which 4 of these 25 elements make up approximately 96% of living matter?

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#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

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#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:

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#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?

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#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?

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#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? 

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#Question id: 37892

#Plant Biotechnology

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