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TLS Online TPP Program

#Question id: 10376

Symbiotic nitrogen-fixing rhizobia release nodulation (Nod) factors as signaling agents as they near the surface of a legume root. The interaction between specific nod factors and their corresponding receptors. Which of the following statements is incorrect?

#Unit 6. System Physiology – Plant
  1. Nod factors are lipochitin oligosaccharides that bind to a specific class of receptor-like kinases (RLKs) in a species-specific manner
  2. The receptor has two heterodimer, Nod factor receptor 1 and 5 (NFR1 and NFR5). Both have three extracellular LysM domains
  3. Nod factor receptors (NFRs) contain extracellular LysM motifs, initiates an interaction with the conserved SYMRK receptor-like kinases containing a leucine-rich repeat (LRR) domain
  4. The interaction between NFR and SYMRK initiates calcium spiking in the cytosol, presumably via a second messenger molecule
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TLS Online TPP Program

#Question id: 12640

#Unit 6. System Physiology – Plant

Plant species produce a which type of  defensive proteins that bind to carbohydrates or carbohydrate-containing proteins. After being ingested by an herbivore, that bind to the epithelial cells lining the digestive tract and interfere with nutrient absorption
TLS Online TPP Program

#Question id: 12635

#Unit 6. System Physiology – Plant

What is the role of BSK in Brassinosteroid signal transduction pathway?
TLS Online TPP Program

#Question id: 12632

#Unit 6. System Physiology – Plant

In brief, brassinolide binding to the brassinosteroid receptor kinase present on the plasma membrane, these brassinosteroid receptor kinase is,
TLS Online TPP Program

#Question id: 12627

#Unit 6. System Physiology – Plant

Strigolactones are synthesized from β-carotene,  synthesis of the intermediate carlactone, beyond which strigolactone biosynthesis diverges is takes place____
a) in a species-specific manner
b) in Non-species specific manner
c) Divergence is attributed to the functional diversity of MAX1 cytochrome P450 isoforms, which act on carlactone
d) Divergence is attributed to the functional diversity of MAX1 cytochrome P450 isoforms, which act on 5-Deoxystrigol
Which of the following combination from the above statement is true?
TLS Online TPP Program

#Question id: 12408

#Unit 6. System Physiology – Plant

Cleavage of the carotenoid by the enzyme NCED (9-cis-epoxycarotenoid dioxygenase) is a rate-limiting highly regulated step in ABA synthesis that produces the 15-carbon precursor molecule xanthoxin in
TLS Online TPP Program

#Question id: 12517

#Unit 6. System Physiology – Plant

Synthesis of violaxanthin is catalyzed by an enzyme known as__