BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 22, Problem 3CT
Summary Introduction
To determine:
The reason that sexual reproduction is more advantageous to molds than asexual reproduction in the presence of a low amount of food.
Introduction:
All the organisms are classified into two types. These are prokaryotes and eukaryotes. Prokaryotes are the organisms that do not contain a well-defined nucleus. However, eukaryotes have a well-defined nucleus properly enclosed in a nuclear membrane. The
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Molds usually reproduce sexually when food is running low. Why might sexual reproduction be more advantageous at this time than when food is plentiful
Why are bacterial spores not considered to be true reproductive bodies like the spores of yeasts and molds?
After plasmogamy has occurred, many molds (Mucoromycetes) exist in a heterokaryotic stage for up to centuries at a time. What occurs at the immediate end of this stage?
The nuclei fuse in a process called karyogamy.
The hyphae fuse in a process called karyogamy.
Diploid spores are produced in various spore-producing structures.
A haploid zygote is formed that becomes multicellular through repeated rounds of mitosis.
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- Which of the following is false of the bread molds/zygomycetes? The bread molds reproduce by using spores The bread molds are a coenocytic fungus The sexually reproductive structure of the bread molds is the zygosporangium Bread molds cannot reproduce asexuallyarrow_forwardSpecies belonging to the kingdom fungi can reproduce both sexually and asexually. In this respect, they are similar to what ?arrow_forwardIn secondary endosymbiosis, the plastid organelle is derived from engulfing Prokaryotic algal cell. an True Falsearrow_forward
- Some fungi exhibit dimorphism, i.e. they can exist in both yeast and mold form. Why is this so? What advantage does this provide for these organisms?arrow_forwardHow do protists carry out sexual reproduction? Discuss by giving an example.arrow_forwardWhich parasitic protist evades the host immune system by altering its surface proteins with each generation? a. Paramecium caudatum b. Trypanosoma brucci c. Plasmodium falciparum d. Phytophthora infrstansarrow_forward
- How does killing Anopheles mosquitoes affect the Plasmadium protists?arrow_forwardThe presence of a contractile vacuole indicates that a single-celled protist _______. a. is marine c. is photosynthetic b. lives in fresh water d. secretes a toxinarrow_forwardThe Zygomycetes (bread molds) are a coenocytic fungus. This means that; Their hyphae lack crosswalls They only reproduce sexually They reproduce using conidia They have heterokaryotic hyphaearrow_forward
- Rhizopus (bread mold) reproduces both sexually and asexually. Rhizopus' sexual reproductive structure is called? Conidia The zygosporagium The ascusarrow_forwardDescribe the difference between sexual and asexual reproduction inzygomycetes. Why might asexual reproduction be more common thansexual reproduction?arrow_forwardTrue or False? A protist that was well adapted to its current environment and was not resource limited would most likely reproduce via asexual reproduction.arrow_forward
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