Statement I is true. Flowers in the Fabaceae family (legumes) can be zygomorphic (bilaterally symmetrical). Zygomorphic flowers typically have only one plane of symmetry, dividing the flower into two mirror-image halves.

Statement II is also true. Vexillary aestivation, also known as papilionaceous aestivation, is indeed commonly seen in the corolla of flowers of the Fabaceae family. In this type of aestivation, the largest petal (called standard) is externally positioned and encloses the other petals in bud, providing protection. The two lateral petals, called wings, partially enclose the two inner petals, forming a keel. This arrangement is characteristic of many flowers in the Fabaceae family.