What are the internal and external factors affecting plant growth in plants and animals and environmental factors that influence growth and development?
There are 4 main factors that can affect the growth of plants. They are water, light, nutrients, and temperature. These four things affect the growth hormones of the plant, which will either make the plant grow quickly or slowly. Plant growth, development are influenced by the environment. The environmental factors are of two types: internal and external factors. External factors include light, temperature water, humidity and nutrition. Internal factors include plant hormones such as auxin, gibberillins. Environmental factors that affect plant growth include light, temperature, water, humidity and nutrition. Several environmental factors such as water, oxygen, temperature, light, etc. also affect the growth of both plaInternal factors are genetic factors. These factors are responsible for the development of the genetic characteristics of a plant. The internal factors include number, size, age and orientation of leaves, mesophyll cells and chloroplasts, internal CO2 concentration and amount of chlorophyll.nts and animals. Water carries the dissolved sugar and other nutrients through the plant and helps in the growth of the plant. Animal growth is determined by a complex variety of factors but these can be reduced to three main categories: the animal's gene pool, the nutrients with which it is supplied, and its environment. The common factor linking and communicating these is the endocrine system. The important factors affecting the growth of plants include: Temperature: Growth is accelerated with the increase in temperature. Light: Light intensity, duration of light and the quality of light influence many physiological processes occurring in a plant. Water: Water is an essential factor for plant growth. Over the past 100 years, the study of environmental influences on human physical growth and development has focused on the influences of social and economic factors; family and household characteristics; urbanization/modernization; nutrition; and features of the physical environment.