Advertisements
Advertisements
प्रश्न
If a harmful chemical enters a food chain comprising peacocks, plants, rats and snakes, which of these organisms is likely to have the highest concentration of the chemical in its body? Justify your answer. Name the process involved and define it.
उत्तर
The peacock will have the highest quantity of dangerous chemicals in its body since the accumulation of non-biodegradable toxic chemicals grows at each trophic level. Bio-magnification refers to the occurrence of an increase in the concentration of hazardous substances at each trophic level. Because peacocks are at the top of the food chain, they have the highest concentration of toxic substances in their bodies. The process by which a hazardous substance enters the food chain and becomes intensified at each trophic level is known as biological magnification.
संबंधित प्रश्न
What is biological magnification?
In the following food chain, 100 J of energy is available to the lion. How much energy was available to the producer?
Plants → Deer → Lion
Give an example of a four step food chain operating in grassland. Name the secondary consumer in this food chain
Some hunters are roaming in the plush green forest of Africa. They spot a deer and kill it. They decide to roast the deer there and then and eat it. When the hunters had just finished enjoying the feast of roasted deer, a lion attacks them. The lion kills one of the hunters and eats his flesh.
(a) write a food chain which provides food to lion in this case.
(b) Which animal (other than deer) the lion could look for food if he did not get the hunter as prey?
(c) Which other animal in the forest could have been in place of lion?
(d) How does the above food chain differ form the food chain such as : plants → goat → man?
A food chain consists of fish, larvae, phytoplanktons and birds. The level of pesticides in water in which the fish, larvae and phytoplanktons live is quite high.
Which other organism you could write in place of bird in the above food chain?
What are decomposers? What will be the consequence if the decomposers are completely eradicated from an ecosystem? Give justification in support of your answer.
Green plants utilize ______ percent of sun’s energy to prepare their food by the process of photosynthesis.
In an ecosystem, herbivores represent ______.
The food chain begins with the energy given by the ______.
Analogy:
Primary Consumer: Goat, Cow:: Secondary Consumer: ______.
