To explain: The reason that adaptation in Argyroneta aquatica for storing air underwater is advantageous over having gills.
Introduction: The diving bell spider (Argyroneta aquatica) lives inside the water. It is dark brown in color, but the presence of hair on the abdomen makes it appear dark gray. It breathes air like other spiders. The air gets trapped by the dense hair on its abdomen and legs. This helps in breathing under water. The trapped air gives a silvery appearance. The diving bells are irregular sheets of silk and protein-based hydrogel. It allows the diffusion of gases but do not allow water to go through. The net diffusion of oxygen in and carbon dioxide out is maintained by the spider.
Want to see the full answer?
Check out a sample textbook solutionChapter 42 Solutions
Campbell Biology, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (10th Edition)
- You receive animal care and use committee approval to catch a fish, prop open its operculum (gill cover), tie a string around its tail, and tow it backwards through the water for experimental purposes. The fish is then released unharmed. This action forces water to flow backwards over the gill filaments and in between the gill lamellae. What effect would this backwards water flow have on respiration? It would reduce efficiency of gas exchange between water and blood The only effect would be due to the fish's discomfort from this treatment. O It would improve efficiency of gas exchange between water and bloodarrow_forwardO The toxin causes inappropriate firing of neurons leading to periods of rapid twitching that infected individuals experience as surnmation leading to tetanus. QUESTION 6 Mammalian lungs are very different in structure compared to amphibian lungs. The lungs of mammals have highly complex branching patterns of airways. The lungs of amphibians are simpler and more sac-like. Over all, the lungs of mammals are capable of much greater rates of gas exchange compared to amphibians. Why is this? O The more complex structure provides more surface area across which gas exchange can occur. O A complex structure means that gases have more contact time with gases compared to a simpler structure. O Mammalian lungs are usually much bigger relative to their bodies compared to amphibian lungs. O The respiratory membranes of mammals are able to diffuse gases across them much faster than amphibians. QUESTION 7 Click Save and Submit to sve and submit. Click Save AL Answers to save all answers. P Type here…arrow_forwardExplain how bird respiratory system works and why it is the most efficient in all animals. Including the following words in your answer, two cycle, one way flow, cross current.arrow_forward
- List corresponding functions of these major respiratory organs in frogs 1. Nares 2. Buccal cavity 3. Glottis 4. Epiglottis 5. Larynx 6. Lungs Include the references.arrow_forwardCrayfish have gills but open circulatory systems, whereas squid have gills but closed systems. What does this difference tell you about each animal's average metabolic needs? What other large surface do squid use for gas exchange, and what internal structure in the squid serves as defense? Explain everything in three paragraphs.arrow_forwardTest Your Understanding 14. PREDICT What problems would be faced by a terrestrial animal having gills instead of lungs?arrow_forward
- 1. Describe the mechanism involved in the exchange of gases in the aquatic vertebrates. counter current oxygen exchange wherein blood and water flows through the gills in opposite directions. 2. Discuss the importance of the contraction and relaxation of the mammalian diaphragm in breathing.arrow_forwardNeither cnidarians nor turbellarians possess a circulatory system. For most large, active animals, this would pose a (fatal) problem. Describe and discuss the features of large active cnidarians ands turbellarians that allow them to respire, nourish their cells, and excrete despite the absence of a conventional circulatory system.arrow_forwardhelparrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
- Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning