NPB 102 Chapter 5 Study Questions

NPB 102 Chapter 5 Study Questions - NPB 102, Animal...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
1 NPB 102, Animal Behavior Winter 2010 Study questions for Chapter 5 1. What is a “command center”? Describe how a command center helps a praying mantis avoid attempting to engage in conflicting behaviors simultaneously, paying particular attention to the different roles of excitatory and inhibitory neural signals. 2. Describe how you would expect each of the following to affect feeding behavior of a blowfly: (1) detection of a sweet solution by sensory receptors on the feet, (2) increased electrical activity of stretch receptors in the foregut/crop area, (3) anesthetization of stretch receptors in the foregut/crop area, (4) severing of the recurrent nerve, (5) detection of a mildly sweet solution by the feet when the gut is entirely empty, (6) detection of a mildly sweet solution by the feet when the gut is, say, half or three-quarters full. 3. What is an “endogenous biological rhythm?” What are several examples of different forms of these rhythms? What fundamental characteristics are shared by all endogenous biological rhythms? 4. Define the term “period” as it relates to endogenous biological rhythms, and give two examples that illustrate how this feature of biological rhythms can vary. 5. In general terms, what is the fitness advantage conferred by endogenous biological rhythms? 6. What is the “ per ” gene and what role is it thought to play in the generation of circadian rhythms? 7. Kangaroo rats generally are active at night and inactive during the day. Does this observation demonstrate that they possess an endogenous circadian activity rhythm? What is a possible alternative explanation for this activity pattern? What kind of additional information would you like to see in order to be convinced that the activity pattern is regulated by a circadian rhythm? 8. Describe an example of how environmental factors can affect the details of a circadian-based activity cycle other than through entrainment. What do you think the adaptive significance of such modifications might be? 9. In order to investigate the process of entrainment of circadian rhythms in mammals and birds, a researcher takes 6 individuals each of a small rodent and of a small songbird, fabricates opaque cloth hoods that fit over the heads of each, blocking all light but leaving room for the mouth to stick out enough for the animals to breathe and feed normally. As controls, the researcher fits another 6 individuals of each species with
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/28/2010 for the course NPB NPB 102 taught by Professor Hahn during the Winter '10 term at UC Davis.

Page1 / 3

NPB 102 Chapter 5 Study Questions - NPB 102, Animal...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online