Recent questions tagged 2006

In order to obtain virus-free plants through tissue culture the best method is-

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Triticale, the first man-made cereal crop, has been obtained by crossing wheat with

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The majority of carbon dioxide produced by our body cells is transported to the lungs-

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In a cereal grain the single cotyledon of embryo is represented by -

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An enzyme that can stimulate germination of barley seeds is-

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The arrangement of the nuclei in a normal embryo sac in the dicot plants is-

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Earthworms are -

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Limit of BOD prescribed by Central Pollution Control Board for the discharge of industrial and municipal waste waters into natural surface waters, is -

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Antibodies in our body are complex-

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Restriction endonuclease -

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Cri-du-chat syndrome in humans is caused by the-

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If a colourblind woman marries a normal visioned man, their sons will be -

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Mast cells secrete-

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Areolar connective tissue joins-

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A steroid hormone which regulates glucose metabolism is-

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Sertoli cells are regulated by the pituitary hormone known as-

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Which one of the following does not act as a neurotransmitter ?

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Which one of the following is an example of polygenic inheritance ?

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During photorespiration the oxygen consuming reaction (s) occur in-

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Which of the following is considered a hot-spot of biodiversity in India ?

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Evolutionary history of an organism is known as-

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Which of the following environmental conditions are essential for optimum growth of Mucor on a piece of bread ? A. Temperature of about 25ºC B. Temperature of about 5ºC C. Relative humidity of about5% D. Relative humidity of about 95% E. A shady place F. A brightly illuminated place Choose the answer from the following options

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Which one of the following is a matching set of phylum and its three examples ?

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A major breakthrough in the studies of cells came with the development of electron microscope. This is because-

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Which one of the following is not a living fossil

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An important evidence in favour of organic evolution is the occurrence of-

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People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude of 5400 metres have around 8 million. This is because at high altitude-

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Curing of tea leaves is brought about by the activity of-

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An organic substance bound to an enzyme and essential for its activity is called -

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How many ATP molecules could maximally be generated from one molecule of glucose, if the complete oxidation of one mole of glucose to $CO_2$ and $H_2O$ yields 686 kcal and the useful chemical energy available in the high energy phosphate bond of one mole of ATP is 12 kcal ?

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Amino acid sequence, in protein synthesis is decided by the sequence of-

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Which of the following statements regarding mitochondrial membrane is not correct ?

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In Maize, hybrid vigour is exploited by-

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How many different kinds of gametes will be produced by a plant having the genotype AABbCC ?

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Conifers differ from grasses in the-

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Long filamentous threads protruding at the end of a young cob of maize are-

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Which one of the following is the most suitable medium for culture of Drosophila melanogaster ?

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Treatment of seed at low temperature under moist conditions to break its dormancy is called

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In photosystem-I, the first electron acceptor is-

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Niche overlap indicates-

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Which one of the following is not used for construction of ecological pyramids ?

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The formula for exponential population growth is-

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Montreal Protocol which calls for appropriate action to protect the ozone layer from human activities was passed in the year-

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Crop plants grown in monoculture are-

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Which one of the following amino-acids was not found to be synthesized in Miller's experiment ?

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How does pruning help in making the hedge dense ?

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Parthenocarpic tomato fruits can be produced by-

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Golden rice is a promising transgenic crop. When released for cultivation, it will help in

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Pineapple (ananas) fruit develops from-

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What would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in its synergids ?

asked Jul 25, 2018 by pady_1

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