Question

difference between intrinsic and extrinsic growth factors of plants​

Answer 1

The interaction between microorganisms and other living things in the earth is natural, constant and which plays a significant role in maintaining the ecological balance and stability of biogeochemical cycling. As microorganisms are associated with living things in nature they play a significant role for survival of plants and animals.

Majority of food materials are obtained from plants and animals and it is rich in different type of microorganisms. Some microorganisms serve as food for human and animal, e.g. mushrooms, some present in food are helpful and some others are harmful to our health. Microorganisms use food as the substrate for their growth and colonization.

Intrinsic Parameters in Food:

The parameters present in substrates in which the microorganisms are growing, that are internal parts of the substrate are called as intrinsic parameters.

The most important types of internal factors in food are:

1. Hydrogen Ion Concentration (pH):

All the microorganisms have a minimal, maximal and optimal pH for their growth, survival and activity of their enzymes. Growth of microorganisms is affected by the pH of growth environments in food (growth medium) resulting large number of enzymes responsible for metabolism and growth. Influence of pH of food not only has effect on growth of microorganisms but also on processing conditions. Food having acidic contents promotes growth of acid loving microorganisms such as yeasts, moulds and some acidophilic bacteria.

Answer 2

AnswEr:

• Intrinsic growth is a defining feature but growth as a whole is a characteristic feature. Which means that growth can be defined in terms of non livings as well, but intrinsic growth is only observed in living beings.

• Intrinsic Growth is the defining feature of an organism whereas extrinsic Growth is the undefining one.

• Intrinsic Growth is shows by living organisms whereas extrinsic growth is shows by non living organism.

• Intrinsic Growth means growth from inside or say increase in mass of cells. As in human beings. like we grow. Extrinsic Growth means accumulation of material on external part which is reversible .For eg snow on the mountain.

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