A symbiotic association between a fungus and a green alga or a cyanobacterium is called a
A. protist.
B. mycorrhiza.
C. mushroom.
D. kelp.
E. lichen.
Answer: E
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What is the main reason that a person sitting on the beach with an air temperature of 15 °C loses heat less rapidly than when immersed in lake water at 15 °C?
A) Water conducts heat more efficiently than air does. B) Water evaporates, and heat is lost to evaporation. C) Metabolic heat production is greater in air than in water. D) Air is a poor insulator.
Identify the biotic factor of an ecosystem among the following options.
A. Amount of moss available to the consumers B. Average wind forces that the cliffs withstand daily C. Amount of nitrogen available for the moss to grow on cliffs D. Nesting spots on the edge of a cliff that birds can use
What powers ATP synthase directly?
a. electron transfer b. NADH and FADH2 c. carbohydrate metabolism
d. the proton gradient e. protein complexes
Which are structures formed from the neural crest? (Check all that apply.)
_____ a gill chamber of primitive chordates _____ blastopores _____ sensory neurons of the dorsal root ganglia _____ Schwann cells _____ olfactory and hearing organs