Struggling with your prescribed literature?
Our Literature Study Guides provide insights and analysis of themes and characters and includes guidelines for writing your exam.
biological classification group (taxon) that is divided into orders.
a thick layer inside the primary cell wall. It consists mainly of cellulose, hemicellulose and...
organisms whose cells have a true nucleus and true organelles. These structures are not...
a small body of modified cardiac muscle cells in the upper right corner of the wall of the right...
thin-walled or slightly strengthened, elongated phloem cells that conduct food substances.
a species that helps scientists identify the age of sedimentary rocks.