ZOL2601 Assignment 4 (COMPLETE ANSWERS) Semester 1 2024 (569387) - DUE 29 April 2024

ZOL2601 Assignment 4 (COMPLETE ANSWERS) Semester 1 2024 (569387) - DUE 29 April 2024 ... 100 % TRUSTED workings, explanations and solutions. For assistance call or W.h.a.t.s.a.p.p us on +/ 2/ 5/ 4 /7 /7 /9 /5 /4 /0 /1 /3 /2 . Assessment 4 Scope: The scope of this assessment is limited to Learning Units 3, 4 and 5 Unique number: 569387 Due date: 2024/04/29 17:00 Answer all five questions (total of 50 marks) Question 1 [10] Provide concise explanations of each of the terms listed below (2 marks each) 1.1 Gas float 1.2 Freeze tolerance 1.3 Hyperosmotic 1.4 Catadromous life cycle 1.5 Brain cooling Question 2 [6] Use diagrams and equations to distinguish between the three general types of allometric relationships. Question 3 [10] Invertebrates that occur in fresh water are considered to be less tolerant of changes in their surrounding medium when compared to invertebrates that occur in brackish water (e.g. freshwater invertebrates do not handle brackish water as well as brackish water invertebrates handle fresh water). 3.1 Draw two line graphs to illustrate differences between these groups with regards to how body fluid concentration changes in response to changes in surrounding medium concentration. (8) 3.2 Explain briefly how your graphs illustrate the concept in question. (2) ZOL2601/102/3/2024 10 Question 4 [14] The table below provides respiration rates at various temperatures for two different species. Species A Species B Temperature (°C) O2 consumed (ml kg-1 hr-1) O2 consumed (ml kg-1 hr-1) 23 24 32 31 51 55 4.1. Calculate the Q10 values for oxygen consumption rates for each of the two species. Show all your calculations. (10) 4.2. Based on the Q10 values, discuss which of the two species is likely to be threatened more by extreme heat events in its environment. Include in your answer a clear explanation of what the Q10 values mean. (4) Question 5 [10] Use an annotated diagram to illustrate the concept of a thermoneutral zone in an endothermic animal, as well lower- and upper critical – and lethal temperatures. Include in your diagram the metabolic rate response, as well as body temperature response to ambient temperature