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Classification of Organisms. DIVERSITY OF ORGANISMS. Q.1 Estimates of the total number of species on Earth range from as low as 3 to 5 million to around _____ million. Ans. 100. This wide range of organisms is described as diversity of organisms .
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DIVERSITY OF ORGANISMS Q.1 Estimates of the total number of species on Earth range from as low as 3 to 5 million to around _____ million. • Ans. 100 This wide range of organisms is described as diversity of organisms.
Q.2 Try to match the following organisms with the place where they live. 1. Shrimp A. rocky store 2. Mushroom B. desert 3. Penguin C. polar region 4. Camel D. woodland 5. Hermit crab E. river • Ans. 1-E 2-D 3-C 4-B 5-A The place or natural environment where each type of organism lives is called its habitat.
To help identify and study organisms, biologists sort/classify them into groups Sorting organisms into groups is called classification. • Organisms are classified into two groups: animals and plants. Q.3 What is the main difference between them? (Hints: consider their ways of obtaining food) • Ans. Plants make their own food but animals feed on others.
Animals are further classified, according to other features, into 2 groups: vertebrates (animals with backbones) invertebrates (animals without backbones) • Plants are also classified into 2 groups: flowering plants non-flowering plants
You Should Be Able to: 1. Point out that there is a large variety of living things. 2. Classify animals into vertebrates and invertebrates. 3. Classify vertebrates into fishes, amphibians, reptiles, birds and mammals. 4. Classify plants into flowering and non-flowering plants using external features. 5. Classify non-flowering plants into algae, fungi, mosses, ferns and gymnosperms. 6. Use an identification key.
Prepared by Fok Ping Chiu 97055670 Leung Kin Lap 97100880 Pang Oi Yan 97055830 Tong Cho Shun 97054760 Wong Siu Kit 97054500 Course : EDD 5161R