The microorganisms responsible for symbiotically fixing nitrogen in the nodules on the roots of legume plants are:

Explain the occasional presence of Cryptosporidium in domesticwater sources.

Which genera of Alphaproteobacteria are known toform nitrogen-fixing nodules in plants?

Name the fungus used as a biocontrol of plant diseases.

How do cells of neoplastictumors obtain oxygen andnutrients and release wastes?

How do the nitrogen-fixing genera Azospirillum and Rhizobium associate with plant roots?   Rhizobium stays on the outside of the roots of tropical grasses, while Azospirillum grows inside the roots of legumes. Azospirillum and Rhizobium both stay on the outside of roots. Azospirillum stays on the outside of the roots of tropical grasses, while Rhizobium grows inside the roots of legumes. Azospirillum and Rhizobium both grow inside specialized root cells.

Compare and contrast the production of a planttumor by Agrobacterium tumefaciens and a root noduleby a Rhizobium species. In what ways are thesestructures similar? In what ways are they different?Of what importance are plasmids to the developmentof both structures?

Which of the following are true regarding parasites in the phylum Apicomplexa? a) they are intracellular parasites b) when they are inside cells, they exist within a parasitophorous vacuole c) the phylum includes the malaria parasites d) movement of the parasites into cells involves the action of an actomyosin motor e) they only reproduce asexually

What is the mode of action of spiroxamine on fungi?

Plant roots receive all of the following from the symbiotic association with fungi except: O carbohydrates (sugars) soil nutrients (namely P) O increased water uptake O protection from soil diseases