4. How have the xylem vessels allowed plants to adapt to living on land?

Plant adaptations to life on land include the development of many structures a water repellent cuticle, stomata to regulate water evaporation, specialized cells to provide rigid support against gravity, specialized structures to collect sunlight, alternation of haploid and diploid generations, sexual organs.

Explanation:

brainliest plz :)

answer; i believe that the correct answer is ; males are hemizygous for the x chromosome;