Which of the following increases airs ability to hold water vapor

The seed coat's most important function is to provide a) a nonstressful environment for the megasporangium. b) the means for dispersal. c) dormancy. d) a nutrient supply for the embryo. e) desiccation resistance.

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

How can you tell the difference between rough er from smooth er?