Rhizobial Bacteroids and Their Plant Hosts Have Evolved to Have

question 69

Multiple Choice

Rhizobial bacteroids and their plant hosts have evolved to have what type of symbiotic relationship?

• A) mutalistic
• B) parasitic
• C) commensal
• D) ectosymbiotic
• E) naturalistic

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Definitions:

Decant

The process of gently pouring liquid from one container to another to separate it from sediment or other particles at the bottom.

Clarity

The quality of being clear, understandable, and transparent in expression, thought, or presentation.

Tuberculosis

An infectious disease caused by the tubercle bacillus; pulmonary tuberculosis is a specific inflammatory disease of the lungs that destroys lung tissue.

Gram-positive

Referring to bacteria that retain the crystal violet dye in the Gram stain test, indicating a thick outer cell wall.