NEET Biology Solved Question Paper 2011

Multiple Choice Questions

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Which of the following is related to humoral immunity?

  • T- lymphocyte

  • B- lymphocyte

  • I- lymphocyte

  • P- lymphocyte

B.

B- lymphocyte

The term humor refers to plasma and lymph. B-lymphocytes mature within the bone marrow. The progeny of B-cells differentiate into memory B-cells and effector B-cells called plasma cells. A singe plasma cell can secrete more than 2000 molecule of antibody per second. Secreted antibodies are major effector molecules of humoral immunity.

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    Polyploid derived from two different species is called

    • autopolyploid

    • triploid

    • allopolyploid

    • monoploid

    Answer

    Fertilization occur in

    • uterus

    • ureter

    • vagina

    • fallopian tube

    Answer

    Ovule integument gets transformed into

    • seed

    • fruit wall

    • seed coat

    • cotyledons

    Answer

    Structural element of chromatin is

    • histone

    • acid protein and DNA

    • nuclear matrix

    • nucleosomes

    Answer
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    Acid rain is caused by

    • NO2

    • SO2 and NO2

    • SO3

    • CO2

    Answer

    The name of the pace maker of the heart is

    • lymph node

    • SA node

    • juxtaglomerular apparatus

    • semilunar valve

    Answer

    The scientific name of the moth which produce tasar is

    • Bombyx mori

    • Antherae mylitta

    • Antherae assamensi

    • Philosomia ricini

    Answer

    Biolistic technique is used in

    • tissue culture process

    • gene transfer process

    • hybridization process

    • germplasm conservation process

    Answer
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    Pieces of plant tissue used in culture is called

    • explant

    • domaclone

    • inoculant

    • clone

    Answer