BOTANY
PLANT REPRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They just grow better that way.
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The sperm must swim through a film of water to reach an egg.
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The water picks up a fern or moss seed and disperses them downstream.
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None of these choices are correct.
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Detailed explanation-1: -Their flagellated sperm must swim through water to reach the egg. So mosses and liverworts are restricted to moist habitats.
Detailed explanation-2: -The sperm need to swim through water in order to get to the eggs. The eggs are housed or maintained in the gametophyte, and that dependence on water is why ferns are so often linked to wet habitats.
Detailed explanation-3: -Mosses and ferns are found in moist and shady places because both require the presence of water for sexual reproduction. As fertilization takes place only in the presence of water, through motile antherozoids that swim to reach the archegonium.
Detailed explanation-4: -The sperm needs to swim through water in order to get to the eggs. The eggs are housed or maintained in the gametophyte. And that dependence on water is why ferns are so often linked to wet habitats.