Question

All are extrinsic factors responsible for the development of an organism except
A. Light
B. Amount of oxygen
C .Temperature
D. Hormones

Answer 1

There are many factors responsible for development of organisms. The extrinsic factors influence from the outside like they are environment, cultural. Or related to lifestyle.

Complete answer: Growth and development of an organism is influenced by many factors. The factors can be differentiated into extrinsic and intrinsic factors. Extrinsic factors in the environment are external to food. Extrinsic factors include Temperature, humidity and oxygen. Different organisms grow over a wide range of temperatures. There are three types of temperature in which growth of organisms is observed.
Mesophiles which grow best at room temperature. Most human pathogens fall under this group because of the normal body temperature
Thermophiles grow at high temperature
Psychrophiles grow at low temperature
Humidity is also an important factor for the growth of an organism. Dry conditions are devoid for microbial activities. Other extrinsic factor oxygen is required to grow and multiply the organism. Intrinsic factors include Hydrogen ion concentration i.e,pH, oxidation reduction potential, nutrient content biological structure like hormones All organisms have a minimal ,maximal and optimal pH . Different organisms grow in different pH.Nutrient content is most important for the growth and functioning of an organism. The most important factors that have to be considered are the energy substances in food ,growth promoting substances ,vitamins ,minerals are essential for the energy production of the organism. Therefore,both the factors are essential for the growth of organism
So, the correct answer is “Option D”.

Note:
The interaction between organisms and the living things is natural and constant ,it plays an important role in maintaining the ecological balance . Depending on the type and growth of the organism they deteriorate the quantity and quality of the food.