BIOLOGY  VOL. II
BIOLOGY VOL. II
16th Edition
ISBN: 9781308795317
Author: Raven
Publisher: Mcgraw-Hill/Create
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Chapter 32, Problem 1U
Summary Introduction

Introduction:

Fungi constitute a group of eukaryotic organisms that include yeasts, molds, mushroom and smuts.

Expert Solution & Answer
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Answer to Problem 1U

Correct answer:

Ability to conduct photosynthesis is not a characteristic of a fungus. Therefore, option c. is correct.

Explanation of Solution

Reason for the correct statement:

Fungi lack chloroplasts and hence they cannot conduct photosynthesis. They are heterotrophs that obtain food from their surroundings by secreting digestive enzymes and then absorbing the organic molecules produced as a result of external digestion.

Option c. is given as “ability to conduct photosynthesis”.

As, “Fungus cannot conduct photosynthesis”, is the right answer.

Hence, option c. is correct.

Reason for the incorrect statements:

Option a. is given as “Cell wall made of chitin”.

Fungus has cell wall made up of polysaccharide called chitin, so, it is a wrong answer.

Option b. is given as “A form of mitosis different from plants and animals”.

Fungus undergoes a different form of mitosis in which the nuclear envelope does not breakdown and reform, and the spindle apparatus is formed within the nucleus, so, it is a wrong answer.

Option d. is given as “Filamentous structure”.

Fungus may be either unicellular or filamentous structure, so, it is a wrong answer.

Hence, options a, b, and d are incorrect.

Conclusion

Fungus is heterotroph that obtains food from their surroundings by external digestion.

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After you feel comfortable with your counting method and identifying cells in the various stages of mitosis, use the four images below of whitefish blastula to count the cells in each stage until you reach 100 total cells, recording your data below in Data Table 1. (You may not need to use all four images. Stop counting when you reach 100 total cells.) After totaling the cells in each stage, calculate the percent of cells in each stage. (Divide total of stage by overall total of 100 and then multiply by 100 to obtain percentage.)   Data Table 1Stage    Totals    PercentInterphase        Mitosis:        Prophase        Metaphase        Anaphase        Telophase        Cytokinesis        Totals    100    100% To find the length of time whitefish blastula cells spend in each stage, multiply the percent (recorded as a decimal, in other words take the percent number and divide by 100) by 24 hours. (Example: If percent is 20%, then Time in Hours = .2 * 24 = 4.8) Record your data in Data…
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