To answer: Do sharks really need to keep swimming to stay alive? Introduction : Some sharks must swim constantly in order to keep the flow of oxygen over their gills. Great white sharks and the mako shark is known as ‘obligate ram ventilators’, it is most essential for them to keep moving to stay alive.

Question

Want to see the full answer?

Answer 1

Question

Chapter 34.2, Problem 1HYEW

Summary Introduction

To answer:

Do sharks really need to keep swimming to stay alive?

Introduction:

Some sharks must swim constantly in order to keep the flow of oxygen over their gills. Great white sharks and the mako shark is known as ‘obligate ram ventilators’, it is most essential for them to keep moving to stay alive.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

Bats mostly hunt insects at night. They are able to determine the distance and speed of any prey they are chasing, which has helped them to become excellent nocturnal predators. One potential prey, the tiger moth, has developed two separate methods of evading predation. First, tiger moths emit a toxin that is distasteful to bats, birds, and most other vertebrate predators. Second, they use an organ called a "tymbal" to create a series of high-pitched clicks that only bats can hear, and which identify the tiger moths as something the bats don't like to eat. Bats who prey on tiger moths discover they don't taste very good, learn to identify tiger moths by their clicks, and avoid eating them. Use this information to answer the questions below. Question 1: The scenario above describes a distinct evolutionary interaction. What is it?Can you explain? Question 2: Why is it necessary for the moth to produce both a tymbal click and a toxin? Why not just a toxin? Do you think there are…

"In fish without a tube connecting the gastrointestinal tract to the gas bladder, how is the gas bladder filled?" Physoclistous fish release CO2 into into their gas bladders instead of excreting it from their gills. O2 is released from a capillary bed into the gas gland when the blood is acidified. CO2 is produced through aerobic metabolism by special cells in the gas gland. "O2, CO2, and N2 bubble out of the blood into the gas gland as fish ascend toward the surface. "

(1) Please examine the figure below, depicting a portion of the rete mirabile associated with the gas bladder of two fishes: (a) One of these diagrams references a shallow water fish and the other references a deep water fish. Which diagram belongs to which type of fish? How can you tell? (b) Many deep water fish lack swim bladders altogether! Why do you think this is? What does the presence of a swim bladder in the above deep sea fish suggest about its behavior?