Multiple factors regulate flowering in Arabidopsis. FT mRNA is expressed in companion cells of the leaf vein in response to multiple signals, including day length, light quality, and temperature. FT moves in the phloem from leaves to the apical meristem. FT is unloaded from the phloem in the meristem and interacts with FD.

FT-FD complex activates multiple genes. Which of the following combination is correct?(SS)

TLS Online TPP Program

#Question id: 12626

#Unit 6. System Physiology – Plant

Strigolactone biosynthesis  takes place in____

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: 12628

#Unit 6. System Physiology – Plant

Brassinosteroids  biosynthesis precursor  is______

TLS Online TPP Program

#Question id: 12630

#Unit 6. System Physiology – Plant

Bioactive brassinosteroid levels are also modulated by a variety of inactivation or catabolic reactions, except;

a) epimerization

b) hydroxylation

c) Phosphorylation

d) Sulfonation

e) Ubiquitinylation

f) Conjugation to glucose or lipids

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: 12633

#Unit 6. System Physiology – Plant

In the absence of BRs, BRI1 and BAK1 can form inactive homodimers, which of the following activity is inhibited  these BRs receptor?