Bio 1400 (Exam Questions And Answerscomplete Solutions) #3 Practice Questions With Answers

Which is the correct of bodily responses to increased temperature ? 1. Thermostat in hypothalamus activates cooling mechanisms 2. Body temperature decreases 3. Body temperature increases 4. Sweet glands secrete sweat and blood vessels in skin dilate A. 3,1,4,2 B. 1,2,3,4 C. 3,4,1,2 D. 4,3,2,1 {Ans: a) 3,1,4,2}Which of the following is not a major clade of bilaterian animals ? a) Deuterostomia b) Lophotrochozoa c) Ecdysozoa d) Eumetazoa {Ans: d) Eumetazoa}Which of the following statements regarding the nervous system's transmission of signals is false? a) Information is conveyed by the particular pathway the signal takes b) Communication usually involves more than one type of signal c) The effects can be long lasting d) Transmission is extremely fast for directing rapid responses to the environment e) Impulses can act on neurons, muscle cells, and cells or glands that produce secretions {Ans: c) The effects can be long lasting}In which of the following types of cleavage patterns does each cell have the capacity to develop into a complete embryo ? a) determinate cleavage b) indeterminate cleavage c) spiral cleavage {Ans: b) indeterminate cleavage}An advantage of internal fertilization over external fertilization is that a) internal fertilization allows animals to