Biology
Administering a vaccine provides protection by inducing synthesis of antibodies (proteins) specific of the vaccine. The cell in the body responsible for the production of antibodies is

Platelet
Erythrocyte (red blood cell)
Lymphocyte
Granulocyte

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Biology
Out of 900 reported species of living gymnosperms, conifers are represented by about 500 species, About 2,50,000 species of angiosperms (flowering plants) have also been reported in the world. The vast and dominant woodlands in Europe, Asia, North America and mountains such as Himalayas are wooded with

only conifers
all gymnosperms, except conifers
only angiosperms
angiosperms and all gymnosperms except conifers

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