COORDINATION IN PLANTS 07 CONTROL AND COORDINATION Class 10th Biology (Practice Sheet) 1 What is the role of phytohormones in plants? A. Regulation of sunlight B. Control and coordination C. Nutrient absorption D. Seed dispersal 2 Which movement in plants is independent of the stimulus and growth? A. Phototropism B. Geotropism C. Nastic Movements D. Hydrotropism 3 In geotropism, what is the direction of root growth with respect to gravity? A. Towards gravity B. Away from gravity C. Parallel to gravity D. No effect 4 Which phytohormone promotes cell division in plants and delays leaf aging? A. Auxins B. Gibberellins C. Cytokinin D. Abscisic acid 5 What type of movement is exhibited by plant tendrils in response to touch? A. Phototropism B. Thigmotropism C. Geotropism D. Chemotropism 6 Explain the process of phototropism in plants. 7 Describe the role of cytokinins in plant physiology. 8 What is the significance of thigmotropism in plants? 9 Differentiate between positive and negative geotropism in plant growth. 10 How do nastic movements differ from tropic movements in plants? Page 1 Email: Phone No: Website:
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