Life of Six Kingdoms

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Every living creature on Earth belongs to a kingdom. Traditionally, textbooks from the United States used a system of six kingdoms (Animalia, Plantae, Fungi, Protista/protoctista, Archaea\Archaeabacteria, and Bacteria\eubacteria ) while British, Australian and Latin American and others textbooks used five kingdoms (Animalia, Plantae, Fungi, Protoctista,

After scientists debate the most agreeable are six kingdoms.

  • Animalia

    Animals are the most complex organisms on Earth. Animals are multi-celled organisms, eat food for survival, and have nervous systems. They are divided into vertebrates and invertebrates and include mammals, amphibians, reptiles, birds and fish.

  • Plantae

    Plants contain chlorophyll, a green pigment necessary for photosynthesis, a process in which plants convert energy from sunlight into food. Their cell walls are made sturdy by a material called cellulose, and they are fixed in one place. Plants are divided into two groups: flower- and fruit-producing plants and those that don’t produce flowers or fruits. They include garden flowers, agricultural crops, grasses, shrubs, ferns, mosses, and conifers.

  • Fungi

    Fungi are usually motionless organisms that absorb nutrients for survival. They include mushrooms, molds, and yeasts.

  • Protista/Protoctista

    Protists are mostly single-celled organisms that have a nucleus. They usually live in water. Some protists move around, while others stay in one place. Examples of protists include some algae, paramecium, and amoeba.

  • Archaea\Archaeabacteria

    Archaebacteria are bacteria with internal membrances and are found in deep-ocean thermal vents, hot springs in Yellowstone, and brine marine environments.

  • Bacteria\Eubacteria

    Eubacteria are single-celled organisms that don’t have a nucleus. Bacteria make up the entire kingdom. There are more forms of bacteria than any other organism on Earth. Some bacteria are beneficial to us, such as the ones found in yogurt. Others can cause us to get sick.

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