Recent questions tagged 2003

Juicy hair-like structure observed in the lemon fruit develop from :-

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Biosystematics aims at :-

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The apical meristem of the root is present

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Diffuse porous wood is characteristics of those plants which are growing in :-

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In which one of the following nitrogen is not a constiuent :

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Which one of the following is wrong in relation to photorespiration :-

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Plants deficient of element zinc, show its effect on the biosynthesis of plant growth hormone-

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Stomata of a plant open due to : -

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In sugarcane plant $^{14}CO_2$ is fixed in malic acid, in which the enzyme that fixes $CO_2$ is :-

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The cells of the quiescent centre are characterised by : -

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Differentiation of shoot is controlled by : -

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In a flowering plant, archesporium gives rise to : -

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Stomata of CAM plants : -

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Which one of the following mineral elements plays an important role in biological nitrogen fixation : -

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The major portion of the dry weight of plants comprises of : -

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Which element is located at the centre of the porphyrin ring in chlorophyll : -

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The major role of minor elements inside living organisms is to act as : -

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Which one of the following concerns photophosphorylation : -

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During anaerobic digestion of organic waste, such as in producing biogas, which one of the following is left undergraded : -

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What would happen if in a gene encoding a polypeptide of 50 amino acids, 25$^{th}$ codon (UAU) is mutated to UAA : -

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Which one of the following pairs is not correctly matched : -

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In Drosophila, the *** is determined by :

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Christmas disease is another name for : -

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During transcription, the DNA site at which RNA polymerase binds is called : -

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During embryonic development, the establishment of polarity along anterior/posterior, dorsal/ventral or medial/lateral axis is called : -

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When a cluster of genes show linkage behaviour they : -

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Degeneration of a genetic code is attributed to the : -

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Pattern baldness, moustaches and beard in human males are examples of : -

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Which one of the following conditions though harmful in itself, is also a potential saviour from a mosquito borne infectious disease :

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Which one of the following traits of garden pea studied by Mendel was a recessive feature : -

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The genes controlling the seven pea characters studied by Mendel are now known to be located on how many different chromosomes : -

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What does "lac" refer to in what we call the lac operon : -

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Two crosses between the same pair of genotypes or phenotypes in which the sources of the gametes are reversed in one cross, is known as : -

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Chromosomes in a bacterial cell can be 1–3 in number and : -

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What used to be described as Nissel granules in a nerve cell are now identified as : -

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Systemic heart refers to : -

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Genes for cytoplasmic male sterility in plants are generally located in : -

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The linkage map of X-chromosome of fruitfly has 66 units, with yellow body gene (y) at one end and bobbed hair (b) gene at the other end. The recombination frequency between these two genes (y and b) should be : -

asked Jul 24, 2018 by pady_1

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Which of the following discoveries resulted in a Nobel Prize : -

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In the genetic code dictionary, how many codons are used to code for all the 20 essential amino acids : -

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During translation initiation in prokaryotes, a GTP molecule is needed in : -

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Sycon belongs to a group of animals, which are best described as : -

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During its life-cycle, Fasciola hepatica (liver fluke) infects its intermediate host and primary host at the following larval stage respectively :

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Ommatidia serve the purpose of photoreception in : -

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Which one of the following describes correctly the homologous structures : -

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Darwin in his 'Natural Selection Theory' did not believe in any role of which one of the following in organic evolution :

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In a random mating population in equilibrium, which of the following brings about a change in gene frequency in a non-directional manner : -

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Industrial melanism is an example of : -

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What is true about T-lymphocytes in mammals : -

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In recent years, DNA sequences (nucleotide sequence) of mt-DNA and Y chromosomes were considered for the study of human evolution, because : -

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