Arabidopsis Thaliana is a small flowering plant from mustard family that is widely used as a model organism in plant genetics and molecular biology. There are several synonyms for this plant species, including Arabidopsis, mouse-ear cress, thale cress, and mustard weed. Arabidopsis is the most commonly used name for this plant, while thale cress refers to the plant's thallus-like leaves, and mouse-ear cress is derived from the plant's hairy leaves. Mustard weed refers to the plant's association with the mustard family and its ability to thrive in disturbed areas. Regardless of the synonym used, Arabidopsis Thaliana is a versatile plant species that has been instrumental in advancing our understanding of plant biology.