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2n of apple - 24

Cell of embryo sac not fertilised by male gamete - Central cell

Genetic mechanism that prevents self fertilisation - Dichogamy

Strawberry - False fruit (thalamus) with embedded achenes

answer is D.

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Detailed Solution

Dichogamy prevents self fertilisation. In dichogamy the stamens and pistils mature at different times.

2n of apple is 34.

Cells of embryo sac not fertilised by male gametes are synergids and antipodals.

False fruit of strawberry has several embedded achenes in its thalamus.

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