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
- A fungal hypha that contains two genetically different nuclei would be classified asa. monokaryotic.b. bikaryotic.c. homokaryotic.d. heterokaryoticarrow_forwardFungi are all: a. multicellular b. eukaryotic c. decomposers d. single- celledarrow_forwardDikaryotic cells A. contain two nuclei per cell B. produce two spores per hypha C. contain diploid nuclei D. have two hyphae per fruiting body E. contain pairs of homologous chromosomesarrow_forward
- The collective mass of hyphae is called a a. sporophyte. b. mycelium. c. ascocarp. d. lichen.arrow_forwardWhich of the following statement(s) is/are TRUE? a. yeasts are unicellular fungi b. molds and mushrooms are filamentous fungi. The filaments are chains of cells called "hyphae" C. most protozoa are unicellular, animal-like members of Domain Archaea, many of which are motile and lack cell walls d. algae have historically been described as "plant-like" protists because they contain chloroplasts and cell walls e. organisms which make chlorophyll a can perform oxygenic photosynthesis f. all organisms which make chlorophyll a have chloroplasts g. Nostoc, algae and plants all make chlorophyll a and all have chloroplasts h. Nostoc, algae and plants have mitochondria which evolved from primitive endosymbiotic bacteria i. Photoautotrophs perform photosynthesis and chemoheterotrophs require pre-formed organic molecules as a source of carbon and energy j. Cyanobacteria, algae and plants are photoautotrophs. Fungi, protozoa and animals are chemoheterotrophs k. Most bacteria, all fungi, all algae…arrow_forwardThe feeding hyphae of a basidiomycete are mostlya. haploid. c. dikaryotic.b. diploid. d. acellular.arrow_forward
- Fungi would best be described as having which of the following life cycles? A. diploid-dominant B. alternation of generations C. gametophyte dominant D. haploid-dominantarrow_forwardThe wall dividing individual cells in a fungal filament is called a a. thallus b. hypha c. mycelium d. septumarrow_forwardThe main growth form of fungi is made up of Select one: O a. hyphae O b. gametangia O c. fruiting bodies O d. sporangia O e. moldsarrow_forward
- . Which phylum of fungi is not known to have a sexual stage in its lifecycle?a. Chytridiomycetes c. Basidiomycetesb. Glomeromycetes d. Zygomycetesarrow_forwardA meristematic cells a. Are dead b. Have a high cytosol/nucleus ration c. Have a few proplastids d. Have lignified cell wallsarrow_forwardIn the life cycle of a typical basidiomycete, you would expect to find a dikaryotic cell in thea. primary mycelium.b. secondary mycelium.c. basidiospores.d. zygote.arrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning