Investigating Simple Animal Responses (AQA A-Level Biology): Flashcards

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Investigating Simple Animal Responses
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What is kinesis?

Increased movement & direction changes in unfavourable conditions

What woodlice do during kinesis

Increase direction changes & move at greater speeds

Acclimatisation time in choice chamber

10 minutes

Statistical test for woodlice distribution

Chi-squared test

Chi-squared formula

χ2=(OE)2E\chi^2 = \sum\frac{(O-E)^2}{E} where OO=observed, EE=expected

Meaning of p=0.05 significance level

Less than 5% probability results occurred by chance

Preferred environment for woodlice

Dark, damp environments

Why woodlice prefer damp conditions

Lack waxy cuticles, lose water rapidly in dry conditions

Number of woodlice used in investigation

Approximately 10 individuals

Safety protocol after handling woodlice

Wash hands thoroughly with soap and warm water

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