chalcone synthase (CHS) involved in biosynthesis of phenolic compound in plants. Following are some statements regarding the action of CHS;

 a) Chalcone synthase catalyzes the conversion of p-Coumaroyl-CoA into Chalcones

 b) Substrate for Chalcone synthase is chalcone

 c) CHS activity increased by environmental factors, such as light, and fungal infection

 d) Chalcone synthase is enzyme in flavonoid biosynthesis catalyzes stepwise condensation into p-Coumaric acid by using Malonyl-CoA molecules

 Which of the following combinations of above statement is true?

TLS Online TPP Program

#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

TLS Online TPP Program

#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: 12533

#Unit 10. Ecological Principles

If the flow of energy in an arctic ecosystem goes through a simple food chain, perhaps involving humans, starts from seaweeds to fish to seals to polar bears, then which of the following could be true?

TLS Online TPP Program

#Question id: 12534

#Unit 10. Ecological Principles

Which of the following statements is correct about biogeochemical cycling?

TLS Online TPP Program

#Question id: 12535

#Unit 10. Ecological Principles

If you were tracking a nutrient molecule through an ecosystem, which of the following statements would you expect to verify?

TLS Online TPP Program

#Question id: 12536

#Unit 10. Ecological Principles

Which of the following properly links the nutrient to its reservoir?