BIOLOGY
12th Edition
ISBN: 9781264839698
Author: Raven
Publisher: MCG CUSTOM
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Textbook Question
Chapter 33, Problem 1U
In the
a. Reproduction
b. Digestion
c. Locomotion
d. Osmoregulation
Expert Solution & Answer
Summary Introduction
Introduction:
Flatworms are free-living organisms, which are present in a wide variety of marine, fresh waste, and terrestrial habitats. Flatworms are carnivores that depend upon small animals and organic debris. Excretion and osmoregulation are the types of metabolic processes that occur in flatworm by flame cells.
Answer to Problem 1U
Correct answer:
In the flatworm, flame cells are involved in osmoregulation, which is a metabolic process. Therefore, option d. is correct.
Explanation of Solution
Reason for the correct statement:
Flame cells, which are present in the flatworm poses an excretory system. Flame cells contain flagella that cause the movement of water and excretory substances within the tubules. Further, it moves to the pores present between the epidermal cells by which the liquid is thrown out.
Option d. is given as “osmoregulation”.
In the flatworm, metabolic processes such as excretion and osmoregulation occurs and is regulated by the flame cells that are the bulblike structures located on the side branches of the tubules”, which is the right answer.
Hence, option d. is correct.
Reasons for the incorrect statements:
Option a. is given as “Reproduction”.
Reproduction is not a metabolic process and flame cells are not responsible for the reproduction in the flatworms. Therefore, it is a wrong answer.
Option b. is given as “Digestion”.
Flatworm contains a single body, a mouth that is responsible for digestion. Therefore, it is a wrong answer.
Option c. is given as “Locomotion”.
Locomotion or movement is not a type of metabolic processes in flatworms. Therefore, it is a wrong answer.
Hence, options a., b., and c. are incorrect.
Conclusion
Conclusion:
Flame cells are the bulb-like structures that contain flagella with flickering movements defeating inside the cell. These are located across the branches of the tubules.
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Students have asked these similar questions
Explain down bellow what happens to the cell in pictures not in words:
Decreased pH in mitochondria
Increased ATP
Decreased pH in cytosol
Increased hydrolysis
Decreasing glycogen and triglycerides
Increased MAP kinase activity
Poor ion transport → For each one:→ What normally happens?→ What is wrong now?→ How does it mess up the cell?
1.) Community Diversity:
The brown and orange line represent two different plant communities.
a. Which color represents the community with a higher species richness?
b. Which color represents the community with a higher species evenness?
Relative abundance
0.1
0.04
0.001
2 4 6
8
10 12 14 16 18 20 22 24
Rank abundance
c. What is the maximum value of the Simpson's diversity index (remember, Simpson's
index is D = p², Simpson's diversity index is 1-D)?
d. If the Simpson's diversity index equals 1, what does that mean about the number of
species and their relative abundance within community being assessed?
1.) Community Diversity:
The brown and orange line represent two different plant communities.
a. Which color represents the community with a higher species richness?
b. Which color represents the community with a higher species evenness?
Relative abundance
0.1
0.04
0.001
2 4 6
8
10 12 14 16 18 20 22 24
Rank abundance
c. What is the maximum value of the Simpson's diversity index (remember, Simpson's
index is D = p², Simpson's diversity index is 1-D)?
d. If the Simpson's diversity index equals 1, what does that mean about the number of
species and their relative abundance within community being assessed?
Chapter 33 Solutions
BIOLOGY
Ch. 33.1 - Prob. 1LOCh. 33.2 - Prob. 1LOCh. 33.2 - Prob. 2LOCh. 33.3 - Prob. 1LOCh. 33.4 - Prob. 1LOCh. 33.4 - Prob. 2LOCh. 33.4 - Prob. 3LOCh. 33.5 - Prob. 1LOCh. 33.6 - Prob. 1LOCh. 33.6 - Distinguish between the Errantia and Sedentaria.
Ch. 33.6 - Describe adaptations in leeches for feeding on the...Ch. 33.7 - Prob. 1LOCh. 33.7 - Prob. 2LOCh. 33.8 - Prob. 1LOCh. 33.8 - Prob. 2LOCh. 33.9 - Prob. 1LOCh. 33.9 - Prob. 2LOCh. 33.9 - Prob. 3LOCh. 33 - In the flatworm, flame cells are involved in what...Ch. 33 - Prob. 2UCh. 33 - Prob. 3UCh. 33 - Prob. 4UCh. 33 - Prob. 5UCh. 33 - Prob. 6UCh. 33 - Prob. 7UCh. 33 - Prob. 8UCh. 33 - Prob. 9UCh. 33 - Prob. 10UCh. 33 - Examples of decapods are a. centipedes and...Ch. 33 - Prob. 1ACh. 33 - Prob. 2ACh. 33 - Prob. 3ACh. 33 - Scientists studying the Chesapeake Bay have...Ch. 33 - Chitin is present in a number of invertebrates, as...Ch. 33 - Prob. 3SCh. 33 - Prob. 4S
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