1. How many layers are there in an arthropod's exoskeleton? What is the main function of each layer?

one is through turgidity. this occurs before ground tissue ( collenchyma

and sclerenchyma cells) become well

developed to give structural support to the plant as it grows bigger. the xylem

tissue (composed of rigid tissue) of the young

plant render this support and also maintaining osmotic turgidity of the surrounding

plant cells.

b is dominant over the allele for the white fur.

occluded front i think