Worksheets12A Chemical Communications in Plants
Total questions: 5
Worksheet time: 25mins
Plant vs. Animal Coordination:
Compare and contrast the fundamental differences in how plants use chemical coordination (hormones) versus how humans use the endocrine system. Why is a slower, diffusion-based mechanism adequate for plants, but insufficient for animals?
The Regulator's Role (Plants): Explain the critical survival role of Abscisic acid (ABA) in a plant's life cycle. How does its action of growth inhibition and stress response contribute to the plant's overall ability to manage adverse environmental conditions?
Growth Hormone Synergy: Describe the combined and coordinated effects of Auxin and Gibberellins on the growth and development of a plant, detailing where each hormone is primarily synthesized and how it exerts its influence.
The Gaseous Messenger: Ethylene is a unique plant hormone because it exists in gaseous form. Analyze the specific advantages and implications this gaseous nature has for mediating widespread plant processes like fruit ripening and the shedding of leaves (abscission).
Ducts vs. Ductless: Differentiate clearly between endocrine glands (like the adrenal gland) and glands like sweat or salivary glands. Use their method of secretion and the target of their chemical compounds to explain the functional distinction.
