The correct option is
A Thallophytes of plant kingdom
- Thallophyta mainly lives in aquatic habitat and they have an autotrophic mode of nutrition.
- The plant body is thallus. It is not differentiated into root, stem, and leaves. The plant body lacks differentiation.
- They lack specialized organs - so they are aquatic in nature and are unable to survive on land. For example, Ulothrix and Chara.
So, the correct answer is option A.