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Describe how processes such as enantiostasis and homeostasis are used to maintain metabolic functions when salt concentration varies in plants living in estuarine environments. - HSC - SSCE Biology - Question 26 - 2009 - Paper 1
Question 26
Describe how processes such as enantiostasis and homeostasis are used to maintain metabolic functions when salt concentration varies in plants living in estuarine en... show full transcript
Worked Solution & Example Answer:Describe how processes such as enantiostasis and homeostasis are used to maintain metabolic functions when salt concentration varies in plants living in estuarine environments. - HSC - SSCE Biology - Question 26 - 2009 - Paper 1
Step 1
Identifies main features of enantiostasis and homeostasis
Answer
Enantiostasis and homeostasis are two crucial processes that help organisms maintain metabolic functions despite environmental changes. Enantiostasis refers to the ability of a plant to maintain metabolic balance by adjusting its internal processes in response to variations in external salt concentration. Homeostasis, on the other hand, is the stability of an organism's internal environment, allowing systems to function optimally.
In estuarine environments, where salinity levels can fluctuate dramatically, both processes are vital for plant survival.
Step 2
Shows how the processes maintain metabolic functions
Answer
To maintain metabolic functions, enantiostasis allows plants to adapt their salt tolerance by regulating ion uptake and synthesis of osmolytes. For instance, when salt concentration increases, these plants may produce specific proteins that help in combating osmotic stress and ensure proper nutrient absorption.
Homeostasis involves executing cellular mechanisms that counteract the effects of high salinity, such as adjusting water content through osmotic regulation. This helps maintain enzyme activity and proper physiological functions, ensuring that metabolic pathways continue to operate effectively even under stress conditions.