Given the differences between angiosperms and gymnosperms in the development of the integument(s), which of these statements is the most logical consequence?
A) The seed coats of angiosperms should be relatively thicker than those of gymnosperms.
B) It should be much more difficult for pollen tubes to enter angiosperm ovules than for them to enter gymnosperm ovules.
C) The female gametophytes of angiosperms should not be as well protected from environmental stress as should those of gymnosperms.
D) As a direct consequence of such differences, angiosperms should have fruit.
E) Angiosperm seeds should be more susceptible to desiccation.
Asymmetrical localization of gene products during egg development in Drosophila
Charge development is unfavorable and can be circumvented by donation of a proton
Positive and negative selection during T-cell development.
Fetal development from 1 month to 9 months
Slopes and Soil Development
Six-week embryo showing development of hand and foot plates