Recent questions in 2013

Which of the following are likely to be present in deep sea water ?

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The colonies of recombinant bacteria appear white in contrast to blue colonies of non-recombinant bacteria because of

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Which of the following is not correctly matched for the organism and its cell wall degrading enzyme ?

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DNA fragments generated by the restriction endonucleases in a chemical reaction can be separated by

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A good producer of citric acid is

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Which of the following Bt crops is being growm in India by the farmers?

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The tendency of population to remain in genetic equilibrium may be disturbed by

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The process by which organisms with different evolutionary history evolve similar phentypic adaptations in response to a common environmental challenge, is called

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If two persons with 'AB' blood group marry and have sufficiently large number of children, these children could be classified as 'A' blood group : 'AB' blood group : 'B' blood group in 1 : 2 : 1 ratio. Modem technique of protin electrophoresis reveals presence of both 'A' and 'B' type proteins in 'AB' blood group individuals. This is an example of

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Variation in gene frequencies within populations can occur by chance rather than by natural selection. This is referred to as

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Which of the following statements is not true of two genes that show 50% recombination frequency ?

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Perisperm differs from endosperm in

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Monoecious plant of Chara shows occurrence of

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Advantage of cleistogamy is

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Meiosis takes place in

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Product of sexual reproduction generally generates

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Which one of the following statements is correct ?

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Which of the metabolites is common to respiration mediated breakdown of fats, carbohydrates and proteins ?

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The first stable product of fixation of atmospheric nitrogen in leguminous plant is

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Which of the following criteria does not pertain to facilitated transport ?

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During seed germination its stored food is mobilized by

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The most abundant intracellular cation is

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The three boxes in this diagram represent the three major biosynthetic pathways in aerobic respiration. Arrows represent net reactants or products Arrows numbered 4, 8 and 12 can all be

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The complex formed by a pair of synapsed homologous chromosomes is called :

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A major site for synthesis of lipids is :

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Pigment-containing membranous extensions in some cyanobacteria are

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A phosphoglyceride is always made up of :

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Transition state structure of the substate formed during an enzymatic reaction is

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Seed coat is not thin membranous in :

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Age of a tree can be estimated by :

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Lenticels are involved in

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In china rose the flowers are :

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Interfascicular cambium develops from the cells of :

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Among bitter gourd, mustard, brinjal, pumpkin, china rose, lupin, cucumber, sunnhemp, gram, guava, bean, chilli, plum, petunia, tomato, rose, withania, potato, onion, aloe and tulip how many plants have hypogynous flower ?

asked Aug 20, 2018 by pady_1

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Read the following statements (A– E) and answer the question which follows them : (A) In liverworts, mosses and ferns gametophytes are free-living (B) Gymnosperms and some ferns are heterosporous (C) Sexual reproduction in Fucus, Volvox and Albugo is oogameous (D) The sporophytes in liverworts is more elaborate than that in mosses (E) Both, Pinus and Marchentia are dioecious How many of the above statements are correct ?

asked Aug 20, 2018 by pady_1

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Megasporangium is equivalent to :

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Besides paddy fields, cyanobacteria are also found inside vegetative part of :

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Isogamous condition with non-flagellated gametes is found in:

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Which one of the following is not a correct statement ?

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Select the wrong statement :

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Which of the following compounds will not undergo Friedel-Craft reaction easily-

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The order of stability of the following tautomeric compounds is

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Which is the monomer of Neoprene in the following ?

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Which of the following is a polar molecule ?

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$6.02 \times 10^{20}$ molecules of urea are present in $100\; mL$ of its solution. The concentration of solution is-

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Some meta - directing substitution in aromatic substitution are given. Which one is most deactivating ?

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Nitrobenzene on reaction with $conc. HNO_3/H_2SO_4$ at $80 – 100^ºC$ forms which one of the following products?

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The structure of isobutyl group in an organic compound is-

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