Which of the following is(are) specialization(s) that evolved in land plants that was(were) unnecessary in their aquatic ancestors?

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Xylem and phloem are specialized vascular tissues that transport water and nutrients throughout the plant, which is necessary for land plants since they cannot simply absorb nutrients through their surroundings like aquatic plants can. Stomata are tiny openings on the plant's surface that allow for gas exchange, but they are also important for regulating water loss, which is crucial for land plants that are at risk of dehydration. Roots are specialized structures that anchor the plant in soil and absorb nutrients and water, which are usually more sparse in terrestrial environments compared to aquatic environments. Therefore, all of these specializations evolved in land plants and were unnecessary in their aquatic ancestors.

Which of the Following Is(are) Specialization(s) That Evolved in Land