TLS Online TPP Program

#Question id: 12714


Physiological and biochemical perturbations in plants caused by fluctuations in the abiotic environment, given column I with environmental factor and with its effects in the form of primary effects  in column II and secondary effects  in column III

 

            COLUMN I 

      (environmental factor )

 

              COLUMN II

           (primary effects)

 

            COLUMN III

        (secondary effects)

 

A) Water deficit

 

 

i) Hypoxia,  Anoxia

 

a) Membrane dysfunction

 

B) High temperature

 

 

ii) ROS production

 

b) Reduced cellular and metabolic activities,

Leaf abscission,

Ion cytotoxicity and Cavitation

 

 

C) Trace element toxicity

 

 

iii) Photo inhibition

 

c) Reduced respiration,    

Fermentative metabolism,       Inadequate ATP production ,

 ROS production and

 Stomatal closure

 

D) Flooding and soil compaction

 

 

iv) Membrane destabilization

 

d) Inhibition of PSII repair

 

E) Chilling

 

v) Cell dehydration and Hydraulic resistance

 

e) Disruption of metabolism

 

F) High light intensity

 

 

 

f) Photosynthetic and respiratory inhibition, ROS production

 


Find out the correct combination of given above column;

#6. System Physiology – Plant
  1.  A-v-b-f ; B-iii-f ; C-ii-e ; D-iv-c ; E-i-a ; F-iii-d
  2. A-ii-c-f ; B-iv-d ; C-ii-e ; D-i-b ; E-iv-a ; F-iii-f
  3. A-v-f ; B-iv-b ; C-i-e-f  ; D-ii-c ; E-iv-d ; F-iii-a
  4. A-v-b-f ; B-iv-f ; C-ii-e ; D-i-c ; E-iv-a ; F-iii-d
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