Concept explainers
Introduction:
Answer to Problem 1MC
Correct answer:
Fungi have cell walls primarily composed of chitin.
Explanation of Solution
Explanation for the correct answer:
Option (c) is given that Fungi have cell walls primarily composed of chitin. Chitin is a strong substance. It is primarily found in exoskeletons of some insects and species related to crab for protection. This substance is also found in cell walls of fungi. This substance makes the tiny hyphae stronger and maintains their cell stability. Hence, option (c) is correct.
Explanation for incorrect answers:
Option (a) is given that Fungi have cell walls primarily composed of lignin. Lignin is a substance found primarily in the wood. This is a strong substance that makes the tree trunks hard. On the contrary, only some species of the fungi can decompose the lignin from the dead plant bodies. So, it is an incorrect option.
Option (b) is given that Fungi have cell walls primarily composed of cellulose. Cellulose is found in most of the plant cells. Most of the animals that eat plant cannot digest cellulose. So they let some species of fungi like rumen live in their gut symbiotically. These fungi digest cellulose. So, it is an incorrect option.
Option (d) is given that Fungi have cell walls primarily composed of glucose. Glucose molecules are the primary source of energy for fungi. They obtain it from other organisms by symbiosis or
Hence, options, (a), (b), and (d) are incorrect.
Therefore, cell walls of Fungi are primarily composed of chitin.
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Chapter 23 Solutions
EBK BIOLOGY
- Which statement below is true about the most recently evolved groups (2 groups) of fungi? a the two most recently evolved groups are zygomycetes and ascomycetes b they have hyphae with crosswalls c they are only found in aquatic environmentsarrow_forwardJustify (a) classifying fungi as opisthokonts, (b) classifying microsporidia as fungi, and (c) grouping ascomycetes and basidiomycetes as sister cladesarrow_forwardA fungal hypha that contains two genetically different nuclei would be classified asa. monokaryotic.b. bikaryotic.c. homokaryotic.d. heterokaryoticarrow_forward
- Why are fungi important decomposers? a. They produce many spores. b. They can grow in many different environments. c. They produce mycelia. d. They recycle carbon and inorganic minerals by the process of decomposition.arrow_forwardFungi are all: a. multicellular b. eukaryotic c. decomposers d. single- celledarrow_forwardGive one significant difference between Protista and Fungi.arrow_forward
- Explain one way humans benefit from fungi.arrow_forwardZygomycetes are different from other fungi because they do not producea. a mycelium.b. fruiting bodies.c. a heterokaryon.d. a sporangium.arrow_forwardFungi are (a) eukaryotes and opisthokonts (b) prokaryotes and opisthokonts (c) flagellate and dikaryotic (d) autotrophic eukaryotes (e) heterotrophs with cellulose cell wallsarrow_forward
- Kingdom fungi are ? A. eukaryotic heterotrophs B. prokaryotic heterotrophs C. eukaryotic bacteria D. prokaryotic bacteriaarrow_forwardwhich of the statements is not true regarding protist? a. they may have cell walls b. They may be photosynthetic c. they may be prokaryotic d. they are usually aerobic though some are not e. some are unicellulararrow_forwardThe life cycles of perfect fungi are most similar to which other organism? a. Hydra that undergo asexual budding b. Diploid-dominant pea plants c. Haploid-dominant green algae d. Bacteria undergoing binary fissionarrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning