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Biomes: Plants
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Biomes are different according to the continent on which they occur. For example, grasslands have different names such as prairie (Nth America), pampa (Sth America), veldt or savanna (Africa), steppe (Asia). The exact plants may vary according to the continent, but they are the same kind of plant for that biome.
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MBGNet - Learn about Biomes of the World: the desert, grasslands, rainforest, temperate forest, taiga & tundra. Investigate plants and animals unique to each environment. Also explore Marine Ecosystems (salt), oceans and shoreline, and Fresh Water Marine Habitats.
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Biomes are differentiated most clearly... on the basis of their organic components. The second term in the phrase boreal coniferous refers to a type of plant that produces cones containing seeds. Thus, the dominant plant life in the boreal coniferous forest includes evergreen conifers that can tolerate cold weather: pine, fir, and spruce.
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Grassland biomes are found on every continent except Antarctica, accounting for about one quarter of the Earth's land surface. Typically found on flat or rolling terrain, grasslands tend to occur in the interior of continents where precipitation is lower. Periodic droughts occur in most grasslands, accompanied by searing heat that scorches most vegetation in the area. Grasslands are covered with grasses, sedges, and other low-growing, perennial plants. Drought, fire, and grazing by herbivores, such as bison and deer, restrict tree growth. Most grasslands have been extensively cultivated and are now regions where major crops of wheat, corn, and other grains are grown.
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Shrub and scrubland biomes are found in dry, temperate area. They have mild winters and very hot summers. Dry weather and lightening storms sometimes cause flash floods during the summer. Flash fires start and spread quickly. They make room for new plants to grow by burning the large, older plants. The heat of the fire causes seed shells to crack.
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Introduce the lesson by telling the students that they are going to be learning about the world’s biomes. Ask a student if he knows the meaning of the word and allow him to respond. Elaborate on the student’s definition by explaining that biomes are complex communities of plants and animals in a climate. Tell the students that the focus of this lesson will be land biomes. Direct the students’ attention to the television monitor and use a scan converter to display the BrainPOP Web site, then play the online movie. After the movie, challenge the students to recall the types of biomes that were presented and have them list some of the animal and plant life that inhabit each area.
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