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.
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Campbell Biology - With Access (Looseleaf) (Custom)
- EVOLUTION LINK Aquatic mammals such as whales and dolphins use lungs rather than gills for gas exchange. Propose a hypothesis to explain why.arrow_forwardTest Your Understanding 12. EVOLUTION LINK What are the advantages of having millions of alveoli rather than a pair of simple, balloonlike lungs?arrow_forwardTest Your Understanding 1. Which of the following is a benefit of gas exchange in air compared with gas exchange in water? (a) air has a higher concentration of molecular oxygen (b) oxygen diffuses more slowly in air (c) no energy is required for ventilation (d) moist respiratory surface is not needed (e) air is denser than waterarrow_forward
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- How does gas exchange differ among the following animals: earthworm, grasshopper, fish, and bird?arrow_forwardTest Your Understanding 7. According to Ficks law of diffusion, a gas will diffuse faster if the (a) surface is reduced (b) difference in pressure is decreased (c) difference in pressure is increased (d) pH is lowered (e) a and carrow_forwardFigure 39.7 Which of the following statements about the mammalian respiratory system is false? When we breathe in, air travels from the pharynx to the trachea. The bronchioles branch into bronchi. Alveolar ducts connect to alveolar sacs. Gas exchange between the lung and blood takes place in the alveolus.arrow_forward
- Please compare mammalian systems vs. avian lungs by discussing the differences and similarities in the system's responses to temperature and concentration gradientarrow_forwardCreat a Concept map about “The Respiratory and Circulatory systems” Include a minumun of 20 concept “bubbles” and also include a minimum 20 arrow or symbols. Includes at least 3 of these “subtopics” that branch from your central idea (Gas Exchange, Transport, Respiration, Circulation, Breathing Mechanics, Lymphatic System, Components of Blood, Spirometry, Immunity, Regulation, Blood Pressure, Homeostasis)arrow_forwardGas exchange is more difficult for aquatic animals with gills than for terrestrial animals with lungs because CHECK ALL THAT WOULD APPLY water contains much more O2 per unit volume than air gills allow water to flow in one direction. water contains much less O2 per unit volume than air gills have less surface area than lungs. water is denser than airarrow_forward
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