why are seed plants more successful than seedless plants


[link] Which of the following statements about the fern life cycle is false?Microphylls are characteristic of which types of plants?A plant in the understory of a forest displays a segmented stem and slender leaves arranged in a whorl. During the Carboniferous period, swamp forests of club mosses and horsetails—some specimens reaching heights of more than 30 m (100 ft)—covered most of the land. Some gametophytes develop underground and form mycorrhizal associations with fungi. More than 20,000 species of ferns live in environments ranging from tropics to temperate forests. The stem may be buried underground as a rhizome, from which adventitious roots grow to absorb water and nutrients from the soil; or, they may grow above ground as a trunk in tree ferns (The tip of a developing fern frond is rolled into a crozier, or fiddlehead (Which of the following statements about the fern life cycle is false?Most ferns produce the same type of spores and are therefore homosporous.

The licorice fern, Go to this website to learn how to identify fern species based upon their fiddleheads.By far the greatest impact of seedless vascular plants on human life, however, comes from their extinct progenitors. Leaves and branches come out as whorls from the evenly spaced joints. In a hostile environment, like the tundra where the soil is frozen, bryophytes grow well because they do not have roots and can dry and rehydrate rapidly once water is again available. Therefore, pollutants dissolved in rainwater penetrate plant tissues readily and have a larger impact on mosses than on other plants. Top Answer.

The disappearance of mosses can be considered a bioindicator for the level of pollution in the environment.Ferns contribute to the environment by promoting the weathering of rock, accelerating the formation of topsoil, and slowing down erosion by spreading rhizomes in the soil. In club mosses, the sporophyte gives rise to sporophylls arranged in strobili, cone-like structures that give the class its name. b) They share a more recent common ancestor with seeded plants than they do with the non-vascular plants.

In seedless vascular plants, the sporophyte became the dominant phase of the lifecycle.Water is still required for fertilization of seedless vascular plants, and most favor a moist environment. Mosses and ferns can be used as fuels and serve culinary, medical, and decorative purposes.Microphylls are characteristic of which types of plants?A plant in the understory of a forest displays a segmented stem and slender leaves arranged in a whorl.

Seedless vascular plants still depend on water during fertilization, as the sperm must swim on a layer of moisture to reach the egg. The OpenStax College name, OpenStax College logo, OpenStax College book covers, OpenStax CNX name, and OpenStax CNX logo are not subject to the creative commons license and may not be reproduced without the prior and express written consent of Rice University. Some reports indicate that bryophytes make the soil more amenable to colonization by other plants. On the underside of its mature fronds, sori (singular, sorus) form as small clusters where sporangia develop (Inside the sori, spores are produced by meiosis and released into the air. The majority of roots establish a symbiotic relationship with fungi, forming mycorrhizae, which benefit the plant by greatly increasing the surface area for absorption of water and soil minerals and nutrients.A third innovation marks the seedless vascular plants. Thin rhizoids attached bryophytes to the substrate, but these rather flimsy filaments did not provide a strong anchor for the plant; neither did they absorb substantial amounts of water and nutrients. In turn, predators feed on the herbivores, which are the primary consumers. Because they establish symbiotic relationships with nitrogen-fixing cyanobacteria, mosses replenish the soil with nitrogen.At the end of the nineteenth century, scientists observed that lichens and mosses were becoming increasingly rare in urban and suburban areas. Gametangia are prominent in seedless plants, but are very rarely found in seed plants.

More importantly, fiddleheads are a traditional spring food of Native Americans in the Pacific Northwest, and are popular as a side dish in French cuisine. 3 4 5. Why can seed plants live in more habitats than seedless plants? The first type of leaf is the In addition to photosynthesis, leaves play another role in the life of the plants. Fronds fulfill a double role; they are photosynthetic organs that also carry reproductive organs. Many seedless plants produce sperm equipped with flagella that enable them to swim in a moist environment to the archegonia: the female gametangium. The extensive network of roots that penetrates deep into the soil to reach sources of water also stabilizes trees by acting as a ballast or anchor. Their spores are carried by the wind, birds, or insects. Vascularization allowed the development of leaves, which increased efficiency of photosynthesis and provided more energy for plant growth.Which plant is considered the most advanced seedless vascular plant and why?Ferns are considered the most advanced seedless vascular plants, because they display characteristics commonly observed in seed plants—they form large leaves and branching roots. Fiddleheads unroll as the frond develops.The lifecycle of a fern is depicted in Figure \(\PageIndex{7}\).Which of the following statements about the fern life cycle is false?To see an animation of the lifecycle of a fern and to test your knowledge, go to the website.Most ferns produce the same type of spores and are therefore homosporous. Because they thrive in low light, they are well suited as house plants. The disappearance of mosses can be considered a bioindicator for the level of pollution in the environment.Ferns contribute to the environment by promoting the weathering of rock, accelerating the formation of topsoil, and slowing down erosion by spreading rhizomes in the soil.

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