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(C) The condition in which a plant produces two distinct types of spores,known as megaspores and microspores,is called $Heterospory$. In such plants,t

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Heterospory

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(C) The condition in which a plant produces two distinct types of spores,known as megaspores and microspores,is called $Heterospory$. In such plants,these spores are produced in two different types of sporangia,namely megasporangia and microsporangia. This is a significant evolutionary step observed in certain pteridophytes like $Selaginella$ and $Salvinia$.

The condition where a pteridophyte produces two kinds of spores and sporangia is termed as

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