Biology 2010 Student Edition

Published by Prentice Hall
ISBN 10: 9780133669510
ISBN 13: 978-0-13366-951-0

Chapter 27, Animal Systems I - Standardized Test Prep - Page 805: 6



Work Step by Step

Option A is incorrect. Urea is excreted in mammals and some amphibians. Option B is incorrect. Animals cannot excrete pure ammonia because it is so toxic that it cannot be stored in any amount in the body. Ammonia must be converted to another type of nitrogen-containing waste product to be able to be stored for any length of time within the body before excretion. Option D. is incorrect. Toxins are poisons and are not excreted. Option C is correct. Reptiles, birds, and insects excrete wastes in the form of uric acid.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.