A researcher is looking at different petri dishes that contain the yeast C. albicans. In the first dish she evaluates, she notices that the yeast do not form hyphae. Is this a mutant strain of yeast?
A)Yes, because the lack of hyphae denotes pathogenic yeast. B)Yes, because yeast typically form hyphae. C)No, because yeast do not normally form hyphae. D)No, because yeast always form rhizoids and not hyphae.
What is the specific role of cyanobacteria (or green algae) in lichens?
A)to help attach the lichens to surfaces B)to synthesize defensive compounds C)to provide fungi with carbohydrates produced by photosynthesis D)to transport water throughout lichens E)Cyanobacteria and green algae play no role in lichens, because lichens consist of fungi.
What is the primary reason that fungi are important in the carbon cycle?
A)Fungi are able to reach incredibly large sizes, storing carbon while they are alive, and contributing carbon back to the atmosphere when they die and decompose. B)Fungi are able to reach incredibly large sizes. Their high ratio of surface area to volume allows them to decompose large amounts of dead/decaying material, thereby returning carbon to the atmosphere. C)Fungi are able to reach incredibly large sizes. They have a high ratio of surface area to volume and are able to fix more carbon through photosynthesis than other plants of comparable size. D)Fungi are able to reach incredibly large sizes. Their high ratio of surface area to volume allows them to store more carbon (in the form of sugar)obtained through mycorrhizal associations than their symbiotic hosts.