Kragl and colleagues (2009) performed an experiment in which they transplanted limb tissue from a salamander whose cells expressed green fluorescent protein (GFP) into different regions of limbs of normal salamanders that did not have the GFP transgene. If they transplanted the GFP-expressing limb cartilage into a salamander limb that did not contain the GFP transgene, the GFP-expressing cartilage would integrate normally into the limb skeleton. They later amputated the limb through the region containing GFP-marked cartilage cells. The blastema was found to contain GFP-expressing cells, and when the blastema differentiated, the only GFP-expressing cells found were in the limb cartilage. Similarly, GFP-marked muscle cells gave rise only to muscle, and GFP-marked epidermal cells only produced the epidermis of the regenerated limb. Which of the following phenomenon is proved according to experiment?

#Question id: 11816

#Unit 6. System Physiology – Plant

Which of the following given statements are correct predict about negatively regulate signalling pathway?

#Question id: 11817

#Unit 6. System Physiology – Plant

In the cytokinin pathway a phosphotransfer AHP1 protein is also known as___

#Question id: 11818

#Unit 6. System Physiology – Plant

Cytokinin signals to nuclear-localized response regulators  by transferring the phosphate group to an aspartate on the receiver domain of the ARR. The ARR response regulators are encoded by multigene families, They fall into two basic classes:

I) Type-A ARRs

II)Type-B ARRs

a) The products of which are made up solely of a receiver domain

b) Receiver domain also include an output domain containing DNA-binding  transcription activation sites

c) Which negatively regulate cytokinin signaling by interacting with other proteins in a manner dependent on the phosphorylation state

d) Which are activated by phosphorylation, which enables them to regulate the transcription of a set of target genes

e) Which are targeted by F-box proteins called KISS ME DEADLY (KMD) proteins negatively regulates the cytokinin response

Which of the following are the correct explanation of the given ARRs types  classes of response regulator?

#Question id: 11819

#Unit 6. System Physiology – Plant

Ethylene is a gaseous hormones which  shows typical  triple response. Following are certain statements regarding the triple response:

a) reduced stem elongation

b) increased lateral growth (swelling)

c) promote root elongation

d) exaggeration of apical hook

Which one of the following combinations is correct?

#Question id: 11820

#Unit 6. System Physiology – Plant

Which of the following is the precursor for ethylene?

#Question id: 11821

#Unit 6. System Physiology – Plant

Immediate precursor of ethylene is___