Two other major groups of flavonoids found in flowers and leaves of all green plants. The function of these two flavonoids in plants are____

a) protect plants against being eaten by herbivores and against being infected by microbial pathogens

b) Protect cells from excessive UV-B radiation (280–320 nm) because they accumulate in the epidermal layers of leaves and stems and absorb light strongly in the UV-B region       

c) flavones and flavonols secreted into the soil by legume roots mediate the interaction of legumes and nitrogen-fixing symbionts

d) They are are coloured terpenoid compounds that also serve as accessory pigments in photosynthesis    

Which of the following combination from the above statements is correct?

TLS Online TPP Program

#Question id: 184

#Section 2: General Biology

What is the approximate charge difference between glutamic acid and alpha-ketoglutarate at pH 9.5?

TLS Online TPP Program

#Question id: 3886

#Section 3: Genetics, Cellular and Molecular Biology

Which one of the following statements about the reverse transcriptases of retroviruses and the RNA replicases of other single-stranded RNA viruses, such as R17 and influenza virus, is correct?

TLS Online TPP Program

#Question id: 324

#Section 2: General Biology

Why are hydrocarbons insoluble in water? 

TLS Online TPP Program

#Question id: 3792

#Section 3: Genetics, Cellular and Molecular Biology

Strain introduced by unwinding DNA at the replication forks is relieved by

TLS Online TPP Program

#Question id: 15876

#Section 6: Plant, Animal and Microbial Biotechnology

The following growth regulators (GRs)- auxins, cytokinins, ABA and GA3 are used in plant tissue culture, The common range of concentrations used are as follows:

GROWTH REGULATOR(GRs)                                     CONCENTERATION

A) AUXIN                                                                       i) 0.1-3 mg/L

B) GA3                                                                          ii) 0.2 mg/L

C) CYTOKININ                                                           iii) 0.1-1 mg/L

D) ABA