What will happen if we kill all the organisms in one trophic level

Biological Magnification is a phenomenon which explains the increasing concentration of harmful chemicals (like DDT) with increase in trophic level. From the soil the chemicals (mainly pesticides, heavy metals, etc.) are absorbed by the plants. The primary consumers eat these plants and the harmful chemicals enter their bodies. As these chemicals are not degradable, they accumulate in the bodies of the organisms and the top level of the food chain gets the highest concentration of these harmful chemicals. Levels of bio-magnification would increase as the trophic level increases and would be higher for higher trophic levels. If we kill all the organisms of a trophic level, the number of organism in next trophic level will decrease drastically due to non-availability food. On the contrary, the number of individuals in lower trophic level will increase because no one will be there to feed upon them, resulting in imbalance ecosystem. Yes the impact of removing all the organisms in a trophic level will be different for different trophic levels. Removing producers will have a major impact as herbivores would not be able to survive and thus the carnivores ecosystem would collapse. Removing herbivores: Producers would grow unchecked; carnivores would not get food. Removing carnivores: Herbivores would increase to unsustainable levels. Removing decomposers: Waste material and animal dead remains would pile up and nutrients would not be available to the producers. Some or the other ...

• Every trophic level has a significant role in the ecosystem. • The impact of removing the organisms of a trophic level is different for different trophic levels. • For example, if we remove plants from a food chain, no organism will get food as plants are the primary producers in the food chain. If herbivores are removed from a food chain then carnivores will starve and die and producers are also affected and may die due to competition for space and nutrients. It is not possible to remove a trophiclevel without causing damage to the ecosystem as they are interlinked.

If we kill all the organisms of one trophic level it will create an imbalance in the ecosystem. As an Example, In a food chain Grass → Dear → Lion, If we remove all lions then population of deer will increase which will cause over-grazing. This will lead to deforestation. It may even lead to soil erosion causing further conversion of fertile land into barren desert. If we kill all the organisms in one trophic level, the transfer of food energy to the next trophic level will stop. This will cause a break in the food chain resulting in ecosystem imbalance. As a result, the organisms of the higher trophic level will also die, while the individuals of the lower trophic level will exhibit enormous growth in their population. Both the conditions will result in ecological upset

For example, in a food chain grass is eaten by a buffalo and buffalo is eaten by a lion. If all the lions in the population were to be removed, the number of buffalo will increase and this will ultimately lead to over-grazing. Over-grazing can lead to the barren land which will ultimately lead to soil erosion. Views: 5,640 CuSO 4 ​ + Zn ⟶ ZnSO 4 ​ + Cu A.) मीजेतत विचिभा D) टूटन दिमघय वित विभा A.) 1 B) 4 C) 5 D) 10 A) भैटीघाटिषिटिव B) भैंटीमैयटिव c) भैंटभौमिद्ध D) भठासत्रतैमिव A) निंब टैठ ठालें भरिंगी ปै B) निंव हा चिय्पलत भंव टैठ ठा्लें छिँठ चै C) तिंव टैठ ठालें त्रिभार्टा विविभगमील चै D) निंव टैत ठालें थॅट विनिभगमीस चै Views: 5,429 ( P ) , ( Q ) , ( R ) and (S). Match the entries in Column I with the entries in Column II. Each entry in Column I may match with one or more entries in Column II. Four choices (A), (B), (C) and (D) are given for this question, out of which ONLY ONE is correct. Match Column I with Column II and choose the correct option.

(a) Trophic Levels – The various steps in a food chain at which the transfer of food takes place are called trophic levels. In a food chain, each step representing an organism forms a trophic level. (b)If we kill all the organisms in one trophic level, then the transfer of food (and energy) to the next trophic level will stop due to which the organisms of next trophic level will starve and die or migrate to other areas. The killing of all the organisms in one trophic level will also lead to the overpopulation of organisms in the previous trophic level. These effects will cause an imbalance in the ecosystem. For example, if we kill all the herbivorous animals like deer, rabbits, etc., in a forest, then the carnivorous animals like lions, tiger, etc., will not get food. Due to this, the lions and tigers etc., will starve and die or migrate from forest and go towards human settlements and attack people. Moreover, in the absence of herbivores like deer, rabbits, etc., the population of the previous trophic level ‘plants’ (or vegetation) will increase too much (because there are no deer or rabbits to eat them). All these effects will create an imbalance in the ecosystem.

At ground level ozone is poisonous but at higher level it is very useful as it protects all living organisms from harmful UV radiations of the sun. It doesn�t allow , the ultra violet radiations to enter the surface of earth. The UV radiations cause ionizing effect that leads,� to skin cancer in human beings. Ans. If all the organisms in one trophic level are killed then all the organisms of next trophic level which are dependent on these are killed. Next trophic levels will no!get food to eat and the entire food chain gets disturbed. At the same time thei�organisms at the lower trophic level will reproduce and the population will increase in abundance there by , disturbing the ecosystem. Ans. The pesticides and chemicals are absorbed by plant from the soil and enter the food chain. Being non-biodegradable they accumulate progressively at, each trophic level. As human occupy the top level of any food chain, the maximum concentration of chemicals is found in our bodies. This is called biological magnification.