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Concept explainers
Introduction:
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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
- What is the opening indicated by the pointer? (leaf x.s.) stomate guard cell lenticel intercellular space none of thesearrow_forwardIdentify the indicated tissue? (stem x.s.) parenchyma collenchyma sclerenchyma ○ xylem ○ phloem none of thesearrow_forwardWhere did this structure originate from? (Salix branch root) epidermis cortex endodermis pericycle vascular cylinderarrow_forward
- Identify the indicated tissue. (Tilia stem x.s.) parenchyma collenchyma sclerenchyma xylem phloem none of thesearrow_forwardIdentify the indicated structure. (Cucurbita stem l.s.) pit lenticel stomate tendril none of thesearrow_forwardIdentify the specific cell? (Zebrina leaf peel) vessel element sieve element companion cell tracheid guard cell subsidiary cell none of thesearrow_forward
- What type of cells flank the opening on either side? (leaf x.s.) vessel elements sieve elements companion cells tracheids guard cells none of thesearrow_forwardWhat specific cell is indicated. (Cucurbita stem I.s.) vessel element sieve element O companion cell tracheid guard cell none of thesearrow_forwardWhat specific cell is indicated? (Aristolochia stem x.s.) vessel element sieve element ○ companion cell O O O O O tracheid O guard cell none of thesearrow_forward
- Identify the tissue. parenchyma collenchyma sclerenchyma ○ xylem O phloem O none of thesearrow_forwardPlease answer q3arrow_forwardRespond to the following in a minimum of 175 words: How might CRISPR-Cas 9 be used in research or, eventually, therapeutically in patients? What are some potential ethical issues associated with using this technology? Do the advantages of using this technology outweigh the disadvantages (or vice versa)? Explain your position.arrow_forward
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