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Option 1, Euglena, is the correct answer. Euglena is an organism that possesses characteristics of both a plant and an animal. It is a single-celled organism that can photosynthesize like a plant, using sunlight to produce energy. However, it can also move using a whip-like structure called a flagellum, which is a characteristic of animals. This makes Euglena unique as it demonstrates characteristics of both kingdoms. It has a chloroplast, which enables it to carry out photosynthesis, and also has a primitive eye spot that allows it to sense light and move towards it. Euglena can survive in various environments, including freshwater, and it is commonly found in ponds and other bodies of water. Overall, Euglena is an interesting organism that exhibits characteristics of both plants and animals.