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Mosses need water to reproduce sexually but many mosses also make use of vegetative reproduction techniques, some of which are dependent on water (for some, for example, the kinetic energy of falling water droplets) and other techniques depend on dry conditions.

Mosses produce female and male structures known as archegoniums and antheridiums, respectively. These in turn produce eggs and sperms. Sometimes they appear on one and the same moss plant and sometimes they appear on different individuals. But even if they appear on the same plant they are always a distance apart, so in order for the gametes to meet, the male sperm is motile. It is equipped with two long tails and is able to swim quite effectively. But, of course, only when there's water present.

Therefore, mosses can only reproduce sexually in wet conditions, either during rainy weather or in the presence of dew.

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14y ago
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13y ago

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Q: Do mosses need water to reproduct?
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