Question

Effects of pollution is observed first on:
A) Food crops
B) Green vegetation
C) Micro-organisms
D) Herbivores

Answer 1

Pollution is the exposure of toxins into the natural environment that causes adverse effects and changes. Pollution can appear as chemical substances or energy, for example, noise, heat, or light. Pollutants, are the main components of pollution, can be either unfamiliar substances/energies or natural toxins.

Complete answer:
Pollution is the biggest problem affecting and influencing the world as a whole. It comes in numerous forms including air, land, and water pollution and from a variety of sources including industry, business, and transportation areas.

Pollution doesn't just affect organisms and humans, it has many adverse consequences for plants too. A portion of these impacts incorporate leaf harm, more slow development, root harm, and failure to photosynthesize appropriately.

Air pollution originates from numerous sources, for example, the smoke stack in a manufacturing plant, vehicle exhaust, or off gassing from paint or producing plastic. The impacts of air pollution on plants are broadly observed and harm all plants including our food yields and trees.
The main chemicals responsible for the pollution can be carbon, sulfur, and nitrogen oxides. Plants generally show damage in various ways, including noticeable indications of damages like necrotic lesions, stunted plant growth, or changing in color including chlorosis (yellowing leaves), bronzing, reddening, tanning, mottling. Air pollution damages plants by leaves or by soil acidification. At the point when exposed to toxins, most plants experience physiological changes prior to displaying noticeable harm to leaves like necrosis, chlorosis.

Hence, the correct answer for this question is option B, i.e. Green vegetation.

Note: Ozone hole is also one of the reasons for the damaging of vegetation. Holes in the upper atmosphere permit an excess of UV light to the atmosphere prompting plant damage. In the lower atmosphere, ozone harms plants, preventing the process of photosynthesis and obstructing stomata, limiting respiration and hindering plant growth.