Which of the following organs or cells components are common to both the sporophytes and the gametophytes of a fern?

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In which of the features do bryophytes differ from pteridophytes?

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Production of naked seeds is a distinctive feature of the group of plant called

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On what structure are the units of inheritance situated?

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The grand period of growth is represented by

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Which part of the curve represents the fastest rate of growth?

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The function of the part labelled 1 is to

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The part labelled 3 is the

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Which organism in the pyramid functions as a tertiary consumer?

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Which level of the pyramid has the least total stored energy?

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Fossil records found in sedimentary rocks offer some explanation for the theory of evolution because

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The theory of natural selection was developed by

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