What sort of symbiosis would a mycorrhiza represent? What will be an ideal response?


In a mycorrhizal association, the fungal partner takes up soil nutrients and shares them with the plant.
Conversely, the plant provides carbohydrates for the fungus. As both partners appear to benefit, this
would be considered an example of mutualism.

Biology & Microbiology

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The ancestral lung of fish has developed into a unique structure used for another important function. What is this function?

a. respiration b. buoyancy c. lymph circulation d. excretion of uric acid e. excretion of urea

Biology & Microbiology

If a scientist is conducting a study of how an animal's senses provide a physiological basis for a particular behavior, what type of causation is she exploring? 

A. ultimate causation B. proximate causation C. stereotyped causation D. ethnological causation E. fixed action pattern causation

Biology & Microbiology

Archimedes principle states that

What will be an ideal response?

Biology & Microbiology

What is the strongest evidence for the idea that present-day eukaryotic aerobes are the descendants of the successful symbiotic association of anaerobes and aerobes?

A. Mitochondria can produce ATP. B. A mitochondrion can survive indefinitely when removed from a eukaryotic cell. C. A mitochondrion has its own set of DNA molecules. D. Fossilized mitochondria are older than the oldest fossilized eukaryotes. E. All eukaryotic cells have mitochondria.

Biology & Microbiology