Chapter 18: Evolution Of Plants And Fungi
Meghan Veach
Bio. 101
Dr. Davis
April 28, 2014
Chapter 18 - Evolution of Plants and Fungi Plants have been around for over 500 million years, the plants all differ so much but they also have many similarities among themselves and also to green algae. Some scholars even think that plants paved the way for land animals by simultaneously increasing the amount of oxygen in the Earth 's atmosphere and decreasing the amount of carbon dioxide. Evolutionist believe that plants evolved from green algae, they think this because: they both carry on photosynthesis, they both have cell walls made of cellulose, they make and convert simple sugars into polysaccharides, this includes starch which they both store. They also both have chlorophyll …show more content…
Hornworts, liverworts, and mosses are bryophytes, they are the nonvascular plants. In the moss life cycle the dependent sporophyte produces windblown spores in sporangium. The dominant gametophyte produces flagellated sperm. Then there is the lycophytes, these are the vascular plants. They have tissue consisting of lignin strengthed xylem for water transportation and phloem for nutrient transportation. The lycophytes are one of the first types of plants to have vascular tissue, they are also seedless, also like ferns. They are called club mosses because the sporangia are produced in club-shaped …show more content…
Fungi are a structurally diverse group of eukaryotes that are strictly heterotrophy. Their digestion system is outside their body and the food is broken down by released digestive enzymes. They are very important as decomposers and break down organic matter into inorganic nutrients, which are essential to plant growth. Some fungi are important as human and animal food, important companions to plant roots, as parasites, and some disease producers in both plants and animals including ringworm, athletes foot, and thrush. The characteristics of fungi include that they are usually multicellular without flagella, they absorb food, they have a haploid life cycle with windblown spores during sexual and asexual reproduction. Most fungi are saprotrophs that decompose dead remains, a mycelium which is a mass of filaments called hyphae, makes up the fungal body. Then there is land fungi which produce windblown spores during both sexual and asexual reproduction. Then the chytrids which are aquatic fungi that produce flagellated spores and
Bio. 101
Dr. Davis
April 28, 2014
Chapter 18 - Evolution of Plants and Fungi Plants have been around for over 500 million years, the plants all differ so much but they also have many similarities among themselves and also to green algae. Some scholars even think that plants paved the way for land animals by simultaneously increasing the amount of oxygen in the Earth 's atmosphere and decreasing the amount of carbon dioxide. Evolutionist believe that plants evolved from green algae, they think this because: they both carry on photosynthesis, they both have cell walls made of cellulose, they make and convert simple sugars into polysaccharides, this includes starch which they both store. They also both have chlorophyll …show more content…
Hornworts, liverworts, and mosses are bryophytes, they are the nonvascular plants. In the moss life cycle the dependent sporophyte produces windblown spores in sporangium. The dominant gametophyte produces flagellated sperm. Then there is the lycophytes, these are the vascular plants. They have tissue consisting of lignin strengthed xylem for water transportation and phloem for nutrient transportation. The lycophytes are one of the first types of plants to have vascular tissue, they are also seedless, also like ferns. They are called club mosses because the sporangia are produced in club-shaped …show more content…
Fungi are a structurally diverse group of eukaryotes that are strictly heterotrophy. Their digestion system is outside their body and the food is broken down by released digestive enzymes. They are very important as decomposers and break down organic matter into inorganic nutrients, which are essential to plant growth. Some fungi are important as human and animal food, important companions to plant roots, as parasites, and some disease producers in both plants and animals including ringworm, athletes foot, and thrush. The characteristics of fungi include that they are usually multicellular without flagella, they absorb food, they have a haploid life cycle with windblown spores during sexual and asexual reproduction. Most fungi are saprotrophs that decompose dead remains, a mycelium which is a mass of filaments called hyphae, makes up the fungal body. Then there is land fungi which produce windblown spores during both sexual and asexual reproduction. Then the chytrids which are aquatic fungi that produce flagellated spores and