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Ch. 40 - Water and Electrolyte Balance in Animals
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All textbooksFreeman 8th EditionCh. 40 - Water and Electrolyte Balance in AnimalsProblem 2

Chapter 39, Problem 2

Which of the following organisms would lose the most water by osmosis across its gills? a. marine bony fish b. shark c. freshwater fish d. freshwater invertebrate

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Hello everyone and welcome to today's video. So most cartilaginous fishes possess salt secreting organs known as and we're giving certain organs or glands that could fulfill this function. So this function of salt secreting is going to be called oz more regulation in which the salutes or the salts are excreted in order to maintain osmotic pressure within the organism. Now this process is usually done by the kidney in the shark and these kidneys possess rectal glands that performs this function of Osma regulation. Because of this, the correct answer choice is going to be answer choice C. Rectal gland. This is the gland that most vicious possess in order for osmo regulation or salt secreting to take place, there is a final answer to our question and I really hope this video helped you.
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Related Practice
Textbook Question

Which of the following statements regarding fishes that live in fresh water is/are correct? Select True or False for each statement. T/F Water moves across the gills via osmosis until equilibrium is established, at which time the water molecules stop moving. T/F They lose water to their environment primarily through the gills. They replace this water by drinking. T/F Water enters epithelial cells in their gills via osmosis. Electrolytes leave the same cells via diffusion. T/F They have specialized epithelia that actively pump electrolytes from the environment into the blood.

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Textbook Question

What effect does antidiuretic hormone (ADH) have on the nephron? a. It increases water permeability of the descending limb of the loop of Henle. b. It decreases water permeability of the descending limb of the loop of Henle. c. It increases water permeability of the collecting duct. d. It decreases water permeability of the collecting duct.

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Textbook Question

Fill in the blank: In Gila monsters, the organ in which water from urine is reabsorbed into the bloodstream is the              .

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Textbook Question

Compare and contrast the types of nitrogenous wastes excreted by animals. Identify which type can be excreted with the least water, which is most toxic, and which waste is excreted by bony fishes, by mammals, and by insects. Which type would you expect to be produced by embryos inside eggs laid on land?

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