1. List three characteristics of the planet Earth that enables it to sustain life. 2. Animals and plants are able to carry out certain processes which distinguish them from non-living things. Describe briefly how a plant feeds and moves. 3. What are the five major groups of life forms or organisms? 4. Bacteria are described as being microscopic and unicellular organisms. What do these terms mean? 5. Name three kinds of fungi and a possible use of each. 6. (a) Plants range in size from unicellular to giant. Put these plants in order from smallest to largest: fern, mango tree, croton, moss and lettuce. (b) List five reasons why plants are important. 7. Name the five groups of vertebrates, giving two examples of each.

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1. Earth's characteristics: Liquid water, protective atmosphere, suitable temperature range. 2. Plant feeding: Photosynthesis using sunlight, CO2, and water. Movement: Growth tropisms like phototropism and gravitropism. 3. Major life forms: Animals, Plants, Fungi, Protists, Bacteria. 4. Microscopic: Too small to see without a microscope. Unicellular: Consists of a single cell. 5. Fungi: Mushrooms (food), Penicillium (antibiotics), Yeast (baking/brewing). 6. Plant order: Moss, Lettuce, Croton, Fern, Mango tree. Importance: Oxygen, food, habitat, soil conservation, climate regulation. 7. Vertebrates: Mammals (Humans, Elephants), Birds (Eagles, Penguins), Reptiles (Snakes, Turtles), Amphibians (Frogs, Salamanders), Fish (Salmon, Goldfish).

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