Classification crossword

What is a division of flowerless green plants that comprises the ferns and their relatives called?
What is the fibrous substance consisting of polysaccharides, which is the major constituent in the exoskeleton of arthropods and the cell walls of fungi.
What functions as a single coordinated unit composed of multiple cells linked structurally and functionally
Microorganisms which are similar to bacteria in size and simplicity of structure but radically different in molecular organization
A microscopic single-celled organism which has neither a distinct nucleus with a membrane nor other specialized organelles, including the bacteria and cyanobacteria.
A kingdom in which plants belong to.
A flowering plant with an embryo that bears a single cotyledon (seed leaf)
A flowering plant with an embryo that bears two cotyledons (seed leaves
Something that is on or of dry land
What is an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide called?
A segmented worm of the phylum Annelida, such as an earthworm or leech.
What kind of organism s capable of utilizing only organic materials as a source of food.