Plant System Physiology Practice Test | CSIR UGC NET JRF Exam

1.Which of the following mechanism is NOT involved in providing photo protection to plants
thermal dissipation
photolysis of water
degradation of D1 protein
zeaxanthin formation

2.DCMU inhibits electron transport in chloroplast by preventing the reduction of
P680
PQ
QA
QB

3.The CO2 compensation point for C3 plants is greater than C4 plants because in C3 plants
dark respiration is higher
dark respiration is lower
Photorespiration is present
photorespiration is absent

4.During the operation of C2 oxidative photosynthetic cycle, which of the following metabolites is transported from chloroplats to peroxisome
Glycine
Serine
Glycolate
Glycerate

5.The alternate pathway of respiration can be inhibited by
Cyanide
SHAM
Ampicillin
Arachidonic acid

6.Among the following which microorganism is involved in nitrogen fixation with woody trees?
Frankia
Azotobacter
Azospirillum
Rhizobium

7.Nitrogenase, a complex metal containing enzyme is involved in conversion of N2 to NH3. Which one of the following metal is NOT involved in the activity of nitrogenase
Iron(Fe)
Cobalt (Co)
Vanadium (V)
Molybdenum (Mo)

8.Out of several gibberellins identified in plants, which one of the following is NOT bioactive
GA1
GA3
GA4
GA5

9.S-adenosyl methionine is a precursor of which plant hormone
ABA
Auxin
Ethylene
Cytokinin

10.Chromophore associated with phytochrome of plants is
Pterin
Beta carotene
Phycobilin
Flavin adenine dinucleotide

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