Sensitivity of Plants How plants detect light using photoreceptors and how they respond to environmental cues. 3.0 / 5 based on 2 ratings ? BiologyA2/A-levelEdexcel Created by: Niki :)Created on: 05-03-13 18:13 The movement of plants in response to light in one direction only is known as... Phototropism 1 of 8 What type of a substance is auxin? growth hormone 2 of 8 Which statement about auxin is false? They destroy enzymes, increasing the pH of the cell wall which becomes rigid. 3 of 8 What effect does etiolation NOT have on plants that grow in the dark? short internodes 4 of 8 The length of the ___________ has an effect on the initiation of flowering in many plants. photoperiod 5 of 8 Plant growth responses to environmental cues are known as... tropisms 6 of 8 What effect does red light have on the flowering of a plant? Inhibits flowering in short-day plants. 7 of 8 P660 and P730 are two interconvertible forms of which blue-green pigment? phytochrome 8 of 8
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