INTEGBI 31 Study Guide - Final Guide: Chemoreceptor, Mechanoreceptor, Sensory System
12 Dec 2016
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INTEGB 31 FINAL EXAM STUDY GUIDE
Study Guide: Foraging
1. What can affect foraging?
• Food resources.
• Animals eat to acquire energy and nutrients for growth, survival and
reproduction.
2. In which kind of environment would one find the use of a lateral line system for
detecting prey?
• Aquatic, like Ocean or Seas
3. What kind of information do mechanoreceptors provide?
• Mechanoreceptors are sensory receptors sensitive to changes in pressure
o Used for hearing and for detecting their own body posi;on and orientation
o Provides information about water pressure or movement that can indicate
the presence of other organisms
4. What animal uses the lateral line system? How do lateral lines sense changes
in water pressure?
• All fish, lateral lines provide hydrodynamic information.
• Pits and tubes run along fish’s body and head
o Pits contain neuromasts, which are little hairs that respond to movement in
the water
o This provides information about water velocity and acceleration and the
direction of water movements
5. What do harbor seals use to detect prey? What is unique about it?
• Uniquely shaped wavy whisker
• track wakes left by moving animals and objects
o Seal’s whisker stays still even when they travel at top speed
6. What can harbor seals determine with their special prey-detecting feature?
• determine the shape of the body which left the ripples
7. What kind of sensory system do shrimp use?
• Chemoreceptors
o Olfaction (smell) – usually in the nose
o Gustation (taste) – usually in the mouth
8. What is the difference between mechanoreceptors and chemoreceptors?
• Mechanoreceptors are based on the pressure of water
• Chemoreceptors are based on the chemicals in the water
9. Where might you find chemoreceptors on an animal?
• In the water?
10. How does a star-nose mole identify its food?
• Use its 22 mobile, pink, fleshy tentacles at the end of the snout
11. In which kind of environment would you find a star-nosed mole? What might
he eat?
• Moisture, underground
• Earthworms, insects, and crustaceans
12. How does a spider “hear” its prey?
• Vibrations felt by little hairs on their legs.
13. Which animals are known to use echolocation?
• Bat (Fishing bats)
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