Question

What are biotic factors? Name any 3 biotic factors which damage food?

This question is from Chapter 15 "Improvement in Food Resources"
Class 9th

Plz answer fast. Exams ..... And plz provide a bit scientific definition and answer only if u know.


Bt ans . fast

Answer 1

Any living organism that has any effect on other organism or situation is known as biotic factor. The biotic factors that are responsible for damaging food materials are rodents, insects, birds and microorganisms.

Answer 2

A biotic factor is any living component that affects the population of another organism, or the environment. This includes animals that consume the organism and the living food that the organism consumes. Biotic factors also include human influence, pathogens, and disease outbreaks.Factors which damage the food materials during storage:
(a) Abiotic factors :1. Temperature. If food is stored at lower temperature, then enzymes, insects and the other micro-organisms, which spoil the food, become less active. The damage to the stored food is decreased.
2. Moisture. For safe storage of food grains, it is essential that the moisture in the food grains should not be more than 14% by weight.
3. Humidity. The growth of moulds and fungi in food grains takes place due to the humidity of the air.
4. The material of the container. Food grains should not be stored in lead container because lead is a toxic metal.
(b) Biotic factors :1. Rodents, birds and animals.
2. Insects and micro-organisms. Microorganisms like fungi, bacteria, yeast, moulds etc. greatly damage the stored food.
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