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;

#Unit 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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TLS Online TPP Program

#Question id: 3516

#Unit 8. Inheritance Biology

Cross allowed between pure line tall plant with pure line dwarf plant , all F1 having tall phenotype were allowed to self to produced  200 plant The number of F2 plant having pure line tall phenotype?

TLS Online TPP Program

#Question id: 3517

#Unit 8. Inheritance Biology

The following two genotypes are crossed: AaBbCcddX AabbCcDd. What will number of different genotypes among the progeny of this cross?

TLS Online TPP Program

#Question id: 3518

#Unit 8. Inheritance Biology

Assume that the trihybrid cross AA BB rr X aa bb RR is made in a plant species in which A and B are dominant but there is incomplete dominance between R and r. Consider the F2 progeny from this cross, and assume independent assortment. The phenotypes appear in this F2 progeny?

TLS Online TPP Program

#Question id: 3519

#Unit 8. Inheritance Biology

If quadruple heterozygote of genotype Aa Bb Cc Dd is self-fertilized, what is the probability of a quadruple heterozygote Aa Bb Cc Dd offspring is assuming independent assortment of all four pairs of alleles.

TLS Online TPP Program

#Question id: 3520

#Unit 8. Inheritance Biology

flower colour  in plant  RR- red , rr- white , Rr- pink  and height of plant ( TT,Tt-tall)  ,(tt- dwarf), If cross allowed between plant RrTt X Rrtt, then what probability of progeny plant having pink flower and dwarf variety ?

TLS Online TPP Program

#Question id: 3521

#Unit 8. Inheritance Biology

Which of the following is incorrect about independent assortment?