Why is the Pericycle absent in the roots and stems of some hydrophytes?

Which term refers to the total dollar value of the goods and services produced in a country in a year?

Describe how alleles and genes are related

How are the reproductive cycles of a fungus and a pteridophyte similar? a)both organisms form fruiting bodies that produce diploid seeds. b)both organisms produce haploid spores and exhibit diploid and haploid stages. c)both organisms reproduce sexually when two haploid hyphae fuse. d)both organisms exhibit a diploid stage and are only able to reproduce asexually.