Nod genes, which NodD activates, code for nodulation proteins, most of which are involved in the biosynthesis of Nod factors such as;

 a) Nod factors are lipochitin oligosaccharide signal molecules

 b) Nod factor shave a chitin β-1→ 4-linked N-acetyl-D-glucosamine backbone

 c) These N-acetyl-D-glucosamine backbone varying in length from three to six sugar units

 d) A fatty acid chain on the C-2 position of the nonreducing sugar determine the length and degree of saturation of the fatty acyl chain by NodL

 Which of the following is incorrect?

TLS Online TPP Program

#Question id: 14959

#Unit 6. System Physiology – Plant

In addition to self assembly, enzymes may facilitate wall assembly. A prime candidate for enzyme-mediated wall assembly is-

TLS Online TPP Program

#Question id: 14958

#Unit 6. System Physiology – Plant

Where the matrix polysaccharides are synthesized by

TLS Online TPP Program

#Question id: 14957

#Unit 6. System Physiology – Plant

the xylan backbone may be synthesized by a distinctly different group of synthases, including synthases named;

TLS Online TPP Program

#Question id: 14956

#Unit 6. System Physiology – Plant

Where is the catalytic domain of cellulose synthase located?

TLS Online TPP Program

#Question id: 14952

#Unit 6. System Physiology – Plant

Some are thin areas where the primary wall is not covered by a secondary wall and are populated with plasmodesmata known as

TLS Online TPP Program

#Question id: 14947

#Unit 6. System Physiology – Plant

 Nonenzymatic proteins whose exact functions are uncertain. Such proteins may be localized in the walls of specific cell types or more widespread

cell wall protein                                                                   Tissue localization

      A) HRGP (hydroxyproline rich glycoprotein)              i) Xylem, fibers, cortex, root hairs

      B) AGP (arabinogalactan protein) ii) Primary xylem and phloem

     C) PRP (proline-rich protein)                                          iii) Cambium, vascular parenchyma

     D) GRP (glycine-rich protein)                                  iv) Varied cell-specific expression

Which of the following combinations of nonenzymatic protein with its correct location?