This is the image of the archegonium and antheridium of moss from the genus Mnium. Antheridium Archegonia Bryophytes require a moist environment because the sperm must swim from the [ Select ] to the [ Select ] where it fertilizes the egg. The fertilized egg develops into the [ Select ].
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Bryophytes require a moist environment because the sperm must swim from the **\textbf{antheridium}** to the **\textbf{archegonium}** where it fertilizes the **\textbf{egg}**. Show more…
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The diagram below shows an example of another nonvascular plant called moss. Circle the structures that you observe and recognize in the living specimen on display. Stalk Capsule Leaves Rhizoids Fig. 10.9 Moss diagram (drawn by Dr. Palavecino) Is the green leafy structure of the moss the gametophyte or sporophyte? Where are the spores produced? Are the spores haploid or diploid? Carefully, using the ruler provided, estimate the size of the gametophyte and the sporophyte (if it is present). In mosses and liverworts, how does the sperm reach the egg? Do mosses and liverworts contain vascular tissue (xylem and phloem)?
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The bryophytes are fundamentally terrestrial plants but require the presence of water to complete their life cycle. The water is needed for: 1. Dehiscence of antheridia 2. Liberation of antherozoids 3. Transfer of sperms from antheridia to archegonia 4. Opening of archegonial neck 5. The movement of antherozoids into the archegonial neck.
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The gametophyte of pteridophyte grows in damp, moist and shady places because (a) They are limited and restricted to a narrow geographical region. (b) They need water for fertilization of gametes formed on the gametophyte. (c) Water is required for gametogenesis. (d) Egg cell swims in water to reach to the antheridia.
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