EVPP 108 Lecture Notes - Lecture 7: Nuclear Weapon, Water Cycle, Global Warming
23 Aug 2016
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The leaf structure are damaged by air pollution. When particulate matter deposits on the leaf they clog stomata and disturb the photosynthesis. Necrosis: it is killing or collapse of plant tissue. Epinasty: curling of leaf due to rapid growth on the upper side of the leaves. Pigmented lesions: they may result with dark brown, black or purple spot appearing on the leaf surface. Genetic variability changes the morphological, physiological and bio-chemical characteristics of the plants. Some plants are but resistant to so2. affected by f. Sensitivity of plants to various pollutants depends on genetic factors, climatic factors, fertility of the soil and availability of water. The important climatic factors affecting response of plants to air pollutants are temperature, humidity, light quality, light intensity and duration of light. Animals are affected by air pollutants in two-step process. Accumulation of the air borne contaminant in the vegetation and forage. Subsequent poisoning of the animals when they eat the contaminated vegetation.
