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Download Organisms can be classified into two major groups
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How are organisms classified? • Organisms can be classified into two major groups-plants and animals • Each plant or animal has a unique pattern of growth and development called a life cycle. • Plants are divided into flowering and non-flowering • Animals are divided into vertebrates and invertebrates • Vertebrates include fish, amphibians, reptiles, birds, and mammals How are plants classified? • Plants have many parts and make their own food. • Some produce flowers while others do not. • Flowering plants are plants that make seeds within flowers (ex: grass, roses, fruit trees) • Some flowers become fruit. • Non-flowering plants are plants that make seeds within cones or produce spores instead of seeds. (ex: ferns, mosses, cedar trees, pine trees) What is the life cycle of a seed? • The life cycle of a seed plant begins with a seed • Seeds need water and warmth to germinate (begin to grow). • Once seeds begin to grow, they become seedlings. • Roots begin to grow and take in nutrients and water from the habitat. • The stem starts to grow toward light and the first leaves form on the stem. • When the plant is fully grown it is called a mature plant. • Mature plants develop flowers or cones, which produce seeds.