RP10-investigating animal response

Question 1

How can a choice chamber be set up to measure the favourable environment of a small organism

Answer 1

by setting up chambers in different quadrants with varying conditions: dark + dry, dark + damp, light + dry, light + damp

Question 2

what are some control variables when repeating this experiment

Answer 2

-number of animals
-environmental conditions
-time allowed for animals to choose

Question 3

what statistical test is used to analyse the results of this practical and why

Answer 3

chi-squared test
compares the expected and observed values and tests if there is a significant difference

Question 4

what is the conclusion drawn if the calculated value is greater than the critical value

Answer 4

-null hypothesis is rejected
-less than 5% probability that the difference is due to chance alone
-there is a statistically significant difference between the expected and observed values

Question 5

what do animals do when they are in an unfavourable environment

Answer 5

they move faster and change direction more frequently to increase their chance of survival

Question 6

state the hazard and precaution for this practical

Answer 6

the live organisms are a biohazard and so should wash hands after handling