A man invited some boys and girls on the birthday of his son. The number of boys was less than that of girls by 2.He gave Rs.10 to each boy and Rs.20 to each girl. If total amount distributed by him is Rs.280, what was the number of boys?

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#Question id: 23816

#Unit 1. Molecules and their Interaction Relevant to Biology

Which one of the following input device is user-programmable?

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#Question id: 11292

#Unit 10. Ecological Principles

In an pond ecosystem the _____ is always greater than the _____ .

(a) number of primary producers . . . number of secondary consumers

(b) biomass of secondary consumers . . . biomass of primary consumer

(c) assimilation efficiency of primary consumers . . . assimilation efficiency of secondary consumers

(d) biomass of primary producers . . . biomass of primary consumers

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#Question id: 19802

#Unit 12. Applied Biology

The low expression level of cry genes seems to be due to the presence in them of sequences not commonly found in plant coding regions. Such as

(1) Localized A+T-rich regions resembling plant intrans 

(2) 18 potential plant polyadenylation signal sequences 

(3) 13 ATTTA sequences, which destabilize mRNA

(4) Codons that are rarely used in plants

Which of the above statements are correct?                

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#Question id: 11123

#Unit 9. Diversity of Life Forms

Cladograms (a type of phylogenetic tree) constructed from evidence from molecular systematics are based on similarities in

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#Question id: 2963

#Unit 2. Cellular Organization

Eukaryotic chromosomes are composed of which of the following macromolecules?