Maximum DNA synthesis during the midproliferative phase of the cycle (i.e. cycle days 8â10) correlates with the maximum number of mitoses in both the stromal and epithelial endometrial cellular elements, as well as with the midproliferative peak of plasma estradiol and nuclear estradiol receptors.
Some defining characteristics of angiosperms include flowers, carpels, and the presence of endosperm, a nutritive substance found in seeds, produced via a second fertilization event. However, some current studies suggest that endosperm is not unique to angiosperms.
Angiosperm Characteristics. Angiosperms seeds are enclosed in fruit and include flowering plants. The male flowers are often small, while female flowers are larger. Once these flowering plants are pollinated, the flower and its reproductive parts dry up and fall away and the plant develops fruit or enclosed seeds.ngiosperms seeds are enclosed in fruit and include flowering plants. The male flowers are often small, while female flowers are larger. Once these flowering plants are pollinated, the flower and its reproductive parts dry up and fall away and the plant develops fruit or enclosed seeds.