Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Textbook Question
Chapter 28, Problem 7TY
What advantages do diatoms obtain from sexual reproduction?
- a. increased genetic variability
- b. increased ability of populations to respond to environmental change
- c. evolutionary potential
- d. regeneration of maximal cell size for the species
- e. all of the above
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Sexual reproduction in protista takes place by a process of
a.)Mitosis b.)Meiosis c.)Fission d.)Syngamy
Dikaryotic 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 chromosomes
Having linear chromosomes packaged with histone proteins is characteristic of: A. all archaeobacteria
B. all gram-positive eubacteria (monoderms)
C. all crenarchaeota
D. all gram-negative eubacteria (diderms) E. all eukaryotes
Chapter 28 Solutions
Biology
Ch. 28.1 - An Introduction to Protists Core Skill:...Ch. 28.2 - Prob. 1CCCh. 28.2 - Evolution and Relationships Concept Check: How do...Ch. 28.2 - Evolution and Relationships Concept Check: How do...Ch. 28.2 - Prob. 4CCCh. 28.2 - Prob. 5CCCh. 28.3 - Prob. 1EQCh. 28.3 - Prob. 2EQCh. 28.4 - Prob. 1CCCh. 28.4 - Prob. 2CC
Ch. 28.4 - Core Skill: Modeling The goal of this modeling...Ch. 28 - Prob. 1TYCh. 28 - Prob. 2TYCh. 28 - Prob. 3TYCh. 28 - Prob. 4TYCh. 28 - What organisms have tertiary plastids? a. certain...Ch. 28 - What is surprising about mixotrophs? a. They have...Ch. 28 - What advantages do diatoms obtain from sexual...Ch. 28 - What are extrusomes? a. hairs on flagella b....Ch. 28 - Prob. 9TYCh. 28 - Prob. 10TYCh. 28 - Prob. 1CQCh. 28 - Why have molecular biologists sequenced the...Ch. 28 - Core Concept: Science and Society Why are the...Ch. 28 - Prob. 1COQCh. 28 - Prob. 2COQ
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- Paramecium and other ciliates often display a sexual phenomenoncalled (a) oogamy (b) conjugation (c) serial endosymbiosis (d) red tide (e) alternation of generationsarrow_forwardWhich is NOT an advantage of the dikaryotic stage in fungi? A. it generate genetic variation B. it increases the chances of the fungi of surviving and reproducing C. it allows the fungi to complete reproduction when conditions are appropriatearrow_forwardWhat is the only haploid stage in the life cycle of animals? Group of answer choices A. zygotes B. spores C. gametes D. adultsarrow_forward
- Fungi are not classified as Plants primarily because they: a. are prokaryotes b. need high moisture c. are chemoheterotrophic d. reproduce sexuallyarrow_forwardA common feature of reproduction in Amoeba, spirogyra and yeast is that –a) They reproduce only sexuallyb) They are all unicellularc) they reproduce asexually d) They are all multicellulararrow_forwardWhat particular characteristic will be featured among among hymenopterans such that full sisters have a a coefficient of relatedness r > 0.5, and it is the females which will display eusocial behavior such as foraging and defending the nest? A. All males are haploid and all females are diploid. B. A queen mates with numerous males. C. The costs of producing a female is much greater than the costs of producing a male. D. There is approximately a 1:1 sex ratio in the colony.arrow_forward
- What do you call the type of reproduction wherein each fragment of an organism develop into new organism? a.)fission b.)budding c.)fragmentation d.)spore formationarrow_forwardWhat is a likely evolutionary advantage of sexual reproduction over asexual reproduction? a. sexual reproduction involves fewer steps b. less chance of using up the resources in a given environment c. sexual reproduction results in greater variation in the offspring d. sexual reproduction is more cost-effectivearrow_forward1. How is genetic variation generated in ciliates? When * A. a micronucleus replicates its genome many times and becomes a macronucleus. B. isogametes fuse. C. micronuclei are exchanged in conjugation. D. oogamous sexual reproduction occurs. 2. Which of the following does not ascribe to phytoplankton? They * A. are the main food source for coral reef communities. B. form the basis of most marine food chains. C. include the radiolarians and forams. D. are drifting community of organisms. 3. Which of the following protoctist phyla is incorrectly paired with its pigments? * A. Phaeophyta-fucoxantin B. Euglenophyta-chlorophyll b C. Rhodophyta-phycoerythrin D. Dinoflagellata-fucoxanthin and chlorophyll carrow_forward
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