Discuss in detail how fungi get their nutrition. Relate this mode of nutrition to how a bed of fungal hyphae can so rapidly breakdown organic materials such as fallen leaves that are in contact with the soil.
Fungi are heterotrophs, which means that fungi rely on organic carbon already fixed by other organisms (eg. cannot gain nutrition via photosynthesis). Most commonly, fungi digest dead organic matter and are the most important decomposers in many ecosystems. Furthermore, fungi use external digestion. Thus, fungi secrete chemicals into their environment that breaks down the organic matter. These chemicals have been proven repeatedly to be incredibly effective in breaking down organic matter, which is why fungus is seen in the stomachs of many ruminants (eg. sheep, cows), to aid in digestion. Once the ...
This solution explains the nutrition of fungi and their role as decomposers in the environment. References are provided to aid in the understanding of the question.
Biology multiple choice and short-answer problems: protists, fungi, fossils, evolution, chromosomes
37. What mode of nutrition is performed by organism in the protista kingdom?
A) autotrophic B) heterotrophic C) both A and B D) neither A nor B
38. All members of the protista kingdom are composed of
A) eukaryote B) prokaryotic cells C) A and B D) Nether A nor B
39. In what division would you find the mushroom-shaped species of fungi?
A) ascomycota B) basidiomycota C) A zygomycota D) none of these
40. Members of the fungi kingdom
A) are autotrophic
B) are heterotrophic
C) have structures composed of prokaryotic cells
43. Most fossils are found in
A) igeneous rock B) metamorphic rock C) sedimentary rock D) tar pits
44. Many changes that occur in living organisms are the result of mutation. This idea was first put forth by
A) Charles Darwin B) Jean Baptiste Lamarck C) Hogo Vries D) Jay Gould
45. The theory that characteristics acquired during the life of parent organism will be passed down to its offspring was proposed by
A) Charles Darwin B) Weinberg C) Lamarck D) Linncaus
46. Suppose the E. coli synthesize DNA at a rate of 1000,000 nucleotides per minute and takes 40 minutes to replicate its chromosomes
(a) How many base pairs are present in the entire E. coli chromosomes?
(b) What is the physical length of the chromosome in its helical configuration, that I, what is the circumference of the circular chromosome?