When antibodies attack antigens, clumping of the affected cells generally occurs. This is best explained by

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#Question id: 12530

#Unit 6. System Physiology – Plant

Some given hormones is also called a ubiquitous hormone?

a) Ethylene

b) Gibberellin

c) Abscisic acid

d) Brassinosteroids

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#Question id: 12531

#Unit 6. System Physiology – Plant

The most bioactive brassin in eudicots, which is a polyhydroxylated steroid similar to animal steroid hormones that brassin is

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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?

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#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?

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#Question id: 12623

#Unit 6. System Physiology – Plant

Some given chemical structure of the phytohormones;

   

                           

Find out the correct name of above given structure

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#Question id: 12624

#Unit 6. System Physiology – Plant

The immediate precursor of brassinolide is____