IGNOU BBYCT 137 2026 - What is stress? Discuss temperature induced stress.

Question

What is stress? Discuss temperature induced stress.

31 Jan 2026

Answer :

Word Count : 261

Stress in plants refers to any environmental factor or condition that negatively impacts their growth, development, and physiological processes. It can result from abiotic factors such as extreme temperatures, drought, salinity, or from biotic factors like pathogen attacks. Stress typically disrupts the normal metabolic balance in plants, leading to reduced productivity or even death if the stress is prolonged or severe. Temperature-induced stress occurs when plants are exposed to temperatures outside their optimal growth range. This can be divided into two categories: heat stress and cold stress. Heat stress happens when temperatures exceed the plant's tolerance limit, often above

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