Photoperiodism 0.0 / 5 ? BiologyPhotoperiodismA2/A-levelWJEC Created by: rhiannonCreated on: 15-10-13 19:21 What is the definition of photoperiodism? A plants response to relative lengths of daylight and darkness. This influences flowering. 1 of 6 What is the name of the photo receptor responsible for absorbing light? Phytochrome. 2 of 6 What are the two types of the pigment phytochrome? pr and pfr. 3 of 6 What are day neutral plants? Flowering is not influenced by day length e.g. Tomato 4 of 6 What are short day plants? Flowering is induced by periods of darkness longer than critical length. 5 of 6 What are long day plants? Flowering is induced by periods of darkness shorter than critical length. 6 of 6
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