Respuesta :
By far the greatest impact of seedless vascular plants on human life, however, comes from their extinct progenitors. The tall club mosses, horsetails, and tree-like ferns that flourished in the swampy forests of the Carboniferous period gave rise to large deposits of coal throughout the world.
The vascular seedless plants are utilized as the medicinal plant and fertilizer.
Further Explanation:
The vascular plants are those plants that possess xylem and phloem for the transport of water and food respectively. Plants that have vascular system but are seedless are the members of Pteridophytes.
The characteristics of Pteridophytes:
1. They are seedless and vascular cryptogams: They reproduces through the production of spores.
2. They show alternation of generation as the sporophytic generation alternates with the gametophytic generation: Sporophyte possess true root, stem and leaves.
3. Spores are developed in the sporangia. Both type of spores are developed- homosporous and heterosporous.
4. Sex organs are multicellular and are jacketed.
Some of the example of Pteridophytes are:
1. Equisetum
2. Salvinia
3. Dicksonia
4. Selaginella
The importance of pteridophytes:
1. They are used as cattle feed
2. They are used for medicinal purpose. For example the foliage decoction of Lycopodium is utilized in homeopathy to treat certain disease such as constipation, eczema, diarrhea and inflammation of liver. Equisetumcontains various flavonoid and saponina that have diuretic effect.
3. Marsilea contains starch and are consumed by people as food in some areas.
4. Aquatic pteridophyte such as Azollaare used as a very good biofertiliser.
Learn more:
1. Learn more about plant https://brainly.com/question/862697
2. Learn more about photosynthesis https://brainly.com/question/873199
3. Learn more about food https://brainly.com/question/1251757
Answer Details:
Grade: College Biology
Subject: Biology
Chapter: The Plant Kingdom
Keywords:
Vascular seedless, xylem, phloem, pteridophytes, sporophytic generation, gametophytic generation, Lycopodium, Marsilea, Azolla.
