The two-experiment performed by a scientist with a forelimb mesenchyme and seeing their results;

I-leg mesenchyme is placed directly beneath the wing AER

II-limb mesenchyme is replaced by non-limb mesenchyme beneath the AER

Conclusion of these experiment are seeing; 

a) distal hindlimb structures develop at the end of the limb

b) supernumerary structures are formed, usually toward the distal end of the limb

c) the AER regresses and limb development ceases

Select the correct result about these experiments-

#Question id: 10220

#Unit 6. System Physiology – Plant

Thylakoid membranes contain a protein kinase that can phosphorylate a specific threonine residue on the surface of LHCII. How the kinase is activated?

#Question id: 10221

#Unit 6. System Physiology – Plant

plastoquinone is one of the electron carriers between PSI and PSII, accumulates in the reduced state. Reduced plastoquinone accumulates when

a.) PSI is being activated more frequently than PSII

b.) PSII is being activated more frequently than PSI  

c.) LHCII is not phophorylated

d.) LHCII is phophorylated

Which of the following state will correct?

#Question id: 10222

#Unit 6. System Physiology – Plant

Energy partitioning between two photosystem protects them from quick dessipation or quick inactivation this energy partitioning take place by a protein kinase that can phosphorylate a specific threonine residue on the surface of LHCII, what is the role of LHCII in phosphorylated and non-phosphorylated state?

a.) LHCII in phosphorylated state migrate towards the PSI in the unstacked region and delivers energy to the PSI 

b.) LHCII in nonphosphorylated state moves back to the grana and delivers energy to the PSII

c.) LHCII in phosphorylated state migrate towards the PSII in the stacked region and delivers energy to the PSI 

d.)  LHCII in nonphosphorylated state moves towards the stroma lamellae unstacked region and delivers energy to the PSII 

Which of the following combination is CORRECT?

#Question id: 10223

#Unit 6. System Physiology – Plant

when plastoquinone is accumulates in the reduced state, Reduced plastoquinone accumulates when PSII is being activated more frequently than PSI. What will happen when plastoquinone becomes more oxidized?

#Question id: 10224

#Unit 6. System Physiology – Plant

Exposure to high levels of excess light that damage the photosynthetic system and decrease both quantum efficiency and maximum photosynthetic rate results

#Question id: 10225

#Unit 6. System Physiology – Plant

Air circulation around the leaf removes heat from the leaf surfaces if the temperature of the leaf is higher than that of the air; this phenomenon is called