NEET 2013

Instructions

For the following questions answer them individually

Question 21

The H-zone in the skeletal muscle fibre is due to:

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Question 22

Artificial insemination means:

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Question 23

Which group of animals belong to the same phylum?

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Question 24

Seed coatis not thin, membranous in:

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Question 25

If two persons with โ€˜ABโ€™ blood group marry and have sufficiently large number of children, these children could be classified as โ€˜Aโ€™ blood group:โ€˜ABโ€™ blood group :โ€™Bโ€™ blood group in1:2:1 ratio. Modern technique of protein electrophoresis reveals presenceof both โ€˜Aโ€™ and โ€˜Bโ€™ type proteins in โ€˜ABโ€™ blood groupindividuals. This is an exampleof:

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Question 26

Which of the following cannot be detected in a developing foetus by amniocentesis?

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Question 27

The first stable product of fixation of atmospheric nitrogen in leguminous plants is :

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Question 28

A biologist studied the population of rats in a barn .He found that the average natality was 250, average mortality 240,immigration 20 and emigration 30.The net increase in population is

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Question 29

Secondary productivity is rate of formation of new organic matter by :

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Question 30

Infection of Ascaris usually occurs by :

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