Solution: Any unfavorable influence on the plant generated by any reason, whether biotic or abiotic, is referred to as stress. Stress has an impact on the plant’s growth and development. Water stress and salt stress are the two types of stress that plants face.  A plant must interact with a variety of biotic and abiotic stimuli on a regular basis. A plant may be stressed as a result of several circumstances.

The following are two types of stress that plants frequently face:

(a) Environmental Stress: Unfavourable conditions, such as salinity, dryness, and severe temperatures, cause environmental stress. Many crop plants are unable to withstand high salinity, drought, or harsh temperatures, and hence become dormant during these periods.

(a) Biotic Stress: Insects and pests are examples of biotic stresses. Weeds can also cause biotic stress in plants. While pests and insects cause direct damage to plants, weeds do so by competing for resources such as sunlight.