When any harmful chemical like DDT enters in a food chain, its concentration increases gradually at each trophic level. This phenomenon is known as Biological magnification. Yes, the level of biological magnification is different for different levels. In trophic level I concentration of harmful chemRead more
When any harmful chemical like DDT enters in a food chain, its concentration increases gradually at each trophic level. This phenomenon is known as Biological magnification. Yes, the level of biological magnification is different for different levels. In trophic level I concentration of harmful chemical is less than other trophic level and in last trophic level concentration of harmful chemical is high.
For eg :- Plant → Goat→ Man
In the above food chain, plants have minimum concentration of chemicals (Pesticides) and in Man , Concentration of chemical is high.
(a) Yes, the impact of removing all the organisms in a trophic level will be different for different trophic levels. For eg : - Grass →→ Rabbit →→ Tiger : In the above food chain : - (i) If we remove all the tigers at the third trophic level, then the number of rabbits will increase and these rabbiRead more
(a) Yes, the impact of removing all the organisms in a trophic level will be different for different trophic levels.
For eg : – Grass →→ Rabbit →→ Tiger :
In the above food chain : –
(i) If we remove all the tigers at the third trophic level, then the number of rabbits will increase and these rabbits will eat up all the grass and plants forest becomes desert.
(ii) If we remove all the rabbits at the second trophic level, then tigers will not get food and due to starvation they will die.
And, also the amount of grass and plants increase.
(b) No, all the organisms of any trophic level cannot be removed without causing any damage to the ecosystem.
If we kill all the organisms in one trophic level then transfer of food and energy to next level will stop.For eg. Plants--> Rabbit--> Wolf--> Tiger If, in the above food chain, we kill the grasshoppers or Trophic level II organisms then transfer of energy from plants (Trophic level I)Read more
If we kill all the organisms in one trophic level then transfer of food and energy to next level will stop. For eg.
Plants–> Rabbit–> Wolf–> Tiger If, in the above food chain, we kill the grasshoppers or Trophic level II organisms then transfer of energy from plants (Trophic level I) to snake (Trophic level III) will stop.
(i) We should use more and more substances that leave biodegradable wastes. (ii) We should reduce the use of non-biodegradable wastes like plastics or recycle them.
(i) We should use more and more substances that leave biodegradable wastes.
(ii) We should reduce the use of non-biodegradable wastes like plastics or recycle them.
Ozone is a gas made up of three atoms of oxygen joined together. i.e.O3. Between 20 – 26 km above the sea level, ozone forms a layer known as ozone layer. This ozone layer absorbs the harmful U.V. radiations of the sunlight and hence, protects the earth and living organisms from the harmful effectsRead more
Ozone is a gas made up of three atoms of oxygen joined together. i.e.O3.
Between 20 – 26 km above the sea level, ozone forms a layer known as ozone layer.
This ozone layer absorbs the harmful U.V. radiations of the sunlight and hence, protects the earth and living organisms from the harmful effects of U.V. rays.
So, this layer is very important for the survival and existence of life on earth. Thus, it protects the ecosystem.
What is biological magnification? Will the levels of this magnification be different at different levels of the ecosystem?
When any harmful chemical like DDT enters in a food chain, its concentration increases gradually at each trophic level. This phenomenon is known as Biological magnification. Yes, the level of biological magnification is different for different levels. In trophic level I concentration of harmful chemRead more
When any harmful chemical like DDT enters in a food chain, its concentration increases gradually at each trophic level. This phenomenon is known as Biological magnification. Yes, the level of biological magnification is different for different levels. In trophic level I concentration of harmful chemical is less than other trophic level and in last trophic level concentration of harmful chemical is high.
See lessFor eg :- Plant → Goat→ Man
In the above food chain, plants have minimum concentration of chemicals (Pesticides) and in Man , Concentration of chemical is high.
Will the impact of removing all the organisms in a trophic level be different for different trophic levels? Can the organisms of any trophic level be removed without causing any damage to the ecosystem?
(a) Yes, the impact of removing all the organisms in a trophic level will be different for different trophic levels. For eg : - Grass →→ Rabbit →→ Tiger : In the above food chain : - (i) If we remove all the tigers at the third trophic level, then the number of rabbits will increase and these rabbiRead more
(a) Yes, the impact of removing all the organisms in a trophic level will be different for different trophic levels.
See lessFor eg : – Grass →→ Rabbit →→ Tiger :
In the above food chain : –
(i) If we remove all the tigers at the third trophic level, then the number of rabbits will increase and these rabbits will eat up all the grass and plants forest becomes desert.
(ii) If we remove all the rabbits at the second trophic level, then tigers will not get food and due to starvation they will die.
And, also the amount of grass and plants increase.
(b) No, all the organisms of any trophic level cannot be removed without causing any damage to the ecosystem.
What will happen if we kill all the organisms in one trophic level?
If we kill all the organisms in one trophic level then transfer of food and energy to next level will stop.For eg. Plants--> Rabbit--> Wolf--> Tiger If, in the above food chain, we kill the grasshoppers or Trophic level II organisms then transfer of energy from plants (Trophic level I)Read more
If we kill all the organisms in one trophic level then transfer of food and energy to next level will stop.
For eg.
Plants–> Rabbit–> Wolf–> Tiger
See lessIf, in the above food chain, we kill the grasshoppers or Trophic level II organisms then transfer of energy from plants (Trophic level I) to snake (Trophic level III) will stop.
How can you help in reducing the problem of waste disposal? Give any two methods.
(i) We should use more and more substances that leave biodegradable wastes. (ii) We should reduce the use of non-biodegradable wastes like plastics or recycle them.
(i) We should use more and more substances that leave biodegradable wastes.
See less(ii) We should reduce the use of non-biodegradable wastes like plastics or recycle them.
What is ozone and how does it affect any ecosystem?
Ozone is a gas made up of three atoms of oxygen joined together. i.e.O3. Between 20 – 26 km above the sea level, ozone forms a layer known as ozone layer. This ozone layer absorbs the harmful U.V. radiations of the sunlight and hence, protects the earth and living organisms from the harmful effectsRead more
Ozone is a gas made up of three atoms of oxygen joined together. i.e.O3.
See lessBetween 20 – 26 km above the sea level, ozone forms a layer known as ozone layer.
This ozone layer absorbs the harmful U.V. radiations of the sunlight and hence, protects the earth and living organisms from the harmful effects of U.V. rays.
So, this layer is very important for the survival and existence of life on earth. Thus, it protects the ecosystem.