![]() Q: Why are pteridophytes common in moist and damp areas?Īns: Pteridophytes have a dependence on water. Learn more about the Life Cycle of Plant here in detail. In these heterosporous plants, the megaspores and microspores germinate and give female and male gametophytes respectively. They are the megaspores and the microspores. Heterosporous plants are the ones that have two different kinds of spores. When the spores of the plants are similar then these plants are called homosporous plants. This zygote produces the sporophyte, after division. Once the fusion of the gametes occurs, a zygote is formed. Antherozoids can get transferred to the archegonia which are the female sex organs, only in the presence of water. Antherozoids are the male gametes, which are released by the antheridia. For this reason, the growth of pteridophytes is confined to certain geographical areas.Īntheridia is the name of the male sex organs and archegonia is the name of female sex organs. Generally, the gametophytes require damp and cool places to grow, due to their dependence on water. These gametophytes are free-living, multicellular and photosynthetic. These spores germinate and give rise to gametophytes. The spores are produced by the sporangia in the spore mother cells. The gametophyte generation forms gametes by mitosis. Here, the dominant sporophyte produces spores through meiosis. Pteridophytes show a true alternation of generations. You can download Plant Kingdom Cheat Sheet by clicking on the download button below ![]() Plant Life Cycles and Alternation of Generations.Browse more Topics under the Plant Kingdom In a few species such as Selaginella and Equisetum, the sporophylls form compact structures called cones or strobili. These bear some leaf-like appendages called the sporophylls. Megaphylls are the large leaves that some pteridophytes have. Some of the species belonging to this division have small leaves called the microphylls. A saprophyte is the main plant body here. The plant body can be divided into true root, stem, and leaves. Also, most ferns are grown as ornamental plants. Mostly, we find these plants in damp and shady places. In fact, they can be considered as the first terrestrial vascular plants, showing the presence of the vascular tissue, xylem, and phloem. Pteridophytes are plants that do not have any flowers or seeds.
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