The physical mechanism by which excitation energy is conveyed from the chlorophyll that absorbs the light to the reaction centre, By this mechanism the excitation energy is transferred from one molecule to another by a nonradioactive process, this mechanism is known as

TLS Online TPP Program

#Question id: 29462

#Unit 6. System Physiology – Plant

Auxin-induced proton extrusion performs

a. Acidification the cell wall 

b. Alkalisation of the call wall

c. Increases cell extension

d. Decrease in cell extension

Which of the following is correct

TLS Online TPP Program

#Question id: 29463

#Unit 6. System Physiology – Plant

In the absence of IAA, the Transcription factor

TLS Online TPP Program

#Question id: 29464

#Unit 6. System Physiology – Plant

The auxin receptor is composed of two proteins

a. SCF complex component TIR1 

b. repressor protein AUX/IAA

c. repressor protein component TIR1 

d. SCF complex component AUX/IAA

Which of the following is correct

TLS Online TPP Program

#Question id: 29465

#Unit 6. System Physiology – Plant

Amyloplasts that function as gravity sensors are called

TLS Online TPP Program

#Question id: 29466

#Unit 6. System Physiology – Plant

EGTA [ethylene glycol-bis(b-aminoethyl ether) N,N,N′,N′-tetraacetic acid], a compound that can  

a. Introduce Ca2+ 

b. chelate Ca2+ 

c. prevents Ca2+ uptake by cells 

d. inhibits root gravitropism

Which of the following is correct

TLS Online TPP Program

#Question id: 29467

#Unit 6. System Physiology – Plant

columella of the root cap cells represent statocytes, or gravity-sensing cells, this can be explained by