Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 28, Problem 3TY
Summary Introduction
Introduction: It is believed that protist was the first eukaryotic organism that ever existed in nature. They are found in a variety of habitats such as the ocean, hot springs, polar regions and so on. However, it has been observed that protist generally prefer to live in a moist environment. Protists are studied under the kingdom named as “Protista”.
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which of the statements is not true regarding protist?
a. they may have cell walls
b. They may be photosynthetic
c. they may be prokaryotic
d. they are usually aerobic though some are not
e. some are unicellular
Why is the classification of protists based on DNA sequences considered useful? a. Because only protists have DNA b. Because genetic sequences have confirmed the traditional categories of protists c. Because DNA reveals evolutionary relationships, even among organisms that look different d. All of the above are correct.
Which statement about protists is false?
a.
They can be photosynthetic and one of the foundations of the marine food web.
b.
Some are multicellular
c.
They are a monophyletic group.
d.
Some are parasitic.
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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- Which of the following is NOT true of protists? Select one: a. Some are unicellular. b. They may be photosynthetic. c. They are usually aerobic, though some are not. d. They may have cell walls. e. They may be prokaryotic.arrow_forwardWhich of these protists is hypothesized to be ancestral to animals? a. a green algal protist b. a choanoflagellate c. an amoeboid protistd. a slime moldarrow_forwardWhy don't we consider protists to all be in 1 kingdom together anymore? Group of answer choices A. because some of them are prokaryotic B. because they are not all closely related C. because they are all prokaryotic D. because some of them are multicellulararrow_forward
- Which of the following is not true of the protists? (a) they are unicellular, colonial, coenocytic, or simple multicellular organisms (b) their cilia and flagella have a 9 + 2 arrangement of microtubules (c) they are prokaryotic, as bacteria and archaea are (d) some are free-living, and some are endosymbionts (e) most are aquatic and live in the ocean or in freshwater pondsarrow_forwardAccording to the phylogeny presented in this chapter, whichprotists are in the same eukaryotic supergroup as plants?(A) green algae(B) dinoflagellates(C) red algae(D) both A and Carrow_forwardYou have discovered a photosynthetic protist that lives in fairly deep water (for example, 250 m deep). To which of the following groups should this organism be classified? A. diatoms B. green algae C. red algae D. cercozoanarrow_forward
- Which protist group exhibits mitochondrial remnants with reduced functionality? a. slime molds b. diatoms c. parabasalids d. dinoflagellatesarrow_forwardWhy is the classification of protists based on DNA sequences useful? * a. Because only protists have DNA b. Because it has confirmed the traditional categories for protists c. Because it has revealed evolutionary relationships, even among organisms that look diffferent d. All of the above are correct This is a required question (2) Why is a species with small population more likely than one with a large population to undergo an extinction? * a. Because small population are exposed to greater environmental changes b. Because genetic diversity is likely to be lower in a small population c. Because the mutation rate is too low d. Because they take too long to produce an offspring.arrow_forwardWhich of the following characteristics is NOT one all protists share? A. mixotrophic, autotrophic and heterotrophic B. eukaryotic C. mostly unicellular D. symbiontsarrow_forward
- Which group is correctly paired with its description? A. diatoms-important consumers in aquatic communities B. diplomonads-protists with modified mitochondria C. apicomplexans -producers with intricate life cycles D. red algae-acquired plastids by secondary endosymbiosisarrow_forwardExplain why microsporidia are no longer considered protistsarrow_forwardWhy are the protists no longer considered a kingdom?arrow_forward
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