Triple Biology revision (B3) 0.0 / 5 ? BiologyRhythmsGCSEEdexcel Created by: zleiblingCreated on: 02-01-15 16:39 a rhythm that lasts one day circadian 1 of 6 a timing mechanism in the brain biological clock 2 of 6 what does the rhythm monitor (chemical messangers) hormones 3 of 6 do plants have circadian rhythms? yes 4 of 6 response to changing day length photoperiodism 5 of 6 ? makes us feel sleepy melatonin 6 of 6
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