The body weight of offspring of bird species is range between 12 gm to 18 gm. In a laboratory experiment, species was subjected to selection pressure having influence on the offspring body weight. After many generations of experimental selection pressure, the body weight range between 16 gm to 24 gm. Which of the following natural selection operate on this species?

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#Question id: 12532

#Unit 6. System Physiology – Plant

In Arabidopsis some brassinosteroid mutants given below;

a) 3-week-old light-grown homozygous bri1 mutant shown a severe dwarf plant while heterozygous bri1 mutant exhibits wild-type morphology

b) 3-week-old light-grown homozygous cpd (constitutive photomorphogenisis and dwarfism) mutant exhibits a wild-type phenotype while heterozygous mutant shown a dwarf phenotype

c) The dark-grown det2 mutant has short, thick hypocotyls and expanded cotyledons while the dark-grown wild type has long, thin hypocotyl 

d) The dark-grown det2 mutant has exhibits a wild-type phenotype

Which of the following given mutants of brassinosteroid is correct?

TLS Online TPP Program

#Question id: 12622

#Unit 6. System Physiology – Plant

Brassinosteroids play pivotal roles in a wide range of developmental phenomena in plants;

a) seed dormancy

b) cell differentiation

c) photomorphogenesis

d) reproductive development

e) delay leaf senescence

f) stress responses

Find from the above combinations of  development in plants by Brassinosteroids is correct?

TLS Online TPP Program

#Question id: 12623

#Unit 6. System Physiology – Plant

Some given chemical structure of the phytohormones;

   

                           

Find out the correct name of above given structure

TLS Online TPP Program

#Question id: 12624

#Unit 6. System Physiology – Plant

The immediate precursor of brassinolide is____

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#Question id: 12625

#Unit 6. System Physiology – Plant

Precursor of strigolactone biosynthesis  is___

TLS Online TPP Program

#Question id: 12626

#Unit 6. System Physiology – Plant

Strigolactone biosynthesis  takes place in____