Organisms in an ecosystem are usually grouped according to their trophic level as

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The most important factors which influence an organism’s way of life in its habitat are

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Which of the following characters is NOT sex-linked?

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When two heterozygotes mate, the dominant trait will appear in

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The exchange of genes between homologous chromosomes is called

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The greatest contribution to genetic studies was made by

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A dwarf plant can be stimulated to grow to normal height by the application of

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Epigeal germination can be found in

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Vegetation propagation is described as asexual reproduction because

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A collection of achenes formed from several carpels of a flower is

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The function of the epididymis in mammals is the

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Which of the following vertebrae lacks a centrum?

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