Why isn't euglena classified in the plant kingdom?

Answer 1

Euglena is not classified in the plant kingdom because it exhibits characteristics of both plants and animals. While it contains chloroplasts and can perform photosynthesis like plants, it also has the ability to move using a flagellum and can consume organic nutrients in the absence of light, similar to animals. This dual nature leads to its classification in the protist kingdom, where it is recognized for its unique blend of features. Additionally, its cellular structure and reproduction methods further differentiate it from true plants.