Which trophic level has the highest concentration of toxic substances in a food chain?
the last trophic level of a food chain has the highest concentration of toxic substances.
Which trophic level has the highest concentration of toxic substances?
Which trophic level has the highest concentration of toxic substances in a food chain? the last trophic level of a food chain has the highest concentration of toxic substances.
Which trophic level has the highest concentration of toxic substances in a food chain Why?
Answer. the last trophic level of a food chain has the highest concentration of toxic substances.
Which trophic level has the highest concentration of toxic substances in a food chain Class 10?
Answer. Top Carnivore or we can say secondary consumer has the highest concentration of toxic substances in a food chain…
What is the increase in toxin concentrations at each food chain level?
Bioaccumulation is the process by which toxins enter the food web by building up in individual organisms, while biomagnification is the process by which toxins are passed from one trophic level to the next (and thereby increase in concentration) within a food web.
Biomagnification and the Trouble with Toxins
What part of the food chain is most affected by toxins?
Bioaccumulation occurs when toxins build up – or accumulate – in a food chain. The animals at the top of the food chain are affected most severely. This is what happens: Small amounts of toxic substances – often pesticides or pollution from human activity – are absorbed by plants.
Which level of the food chain is most affected by biomagnification?
In many cases, animals near the top of the food chain are most affected because of a process called biomagnification. Many of the most dangerous toxins settle to the seafloor and then are taken in by organisms that live or feed on bottom sediments.
Why do harmful chemicals concentrate as we go up in a food chain?
1 Answer. Harmful chemicals such as pesticides get accumulated in the soil and the water gets polluted and this, in turn, is consumed by the plants to take up nutrients. Those chemicals get accumulated in the plants and go to the next trophic level.
Why does the concentration of toxic substances increase from a lower to a higher trophic level?
As the trophic level increases in a food chain, the amount of toxic build up increases. The x’s represent the amount of toxic build up accumulating as the trophic level increases. Toxins build up in organism’s fat and tissue. Predators accumulate higher toxins than prey.
Which trophic level has maximum number of organisms why B in which trophic level chemicals like DDT are accumulated in highest concentration?
(i) The trophic level T1 has maximum number of organisms. (ii) At trophic level 4 chemicals like DDT are accumulated in its highest concentration.
Which level of the food chain is most affected by biomagnification quizlet?
Animals are most affected by biomagnification higher up the food chain after much accumulation.
What is the highest trophic level?
The highest trophic level is the apex predators. Primary consumers are carnivores that survive on secondary consumers (herbivores).
Which trophic level in the food web would contain the highest concentration of chemical pollutants due to biological magnification?
The higher an animal is on the food chain (e.g. tertiary consumer such as seals), the greater the concentration of DDT in their body as a result of a process called biomagnification.
In which trophic level biomagnification is maximum and why?
Answer: The highest trophic level has the most biomagnification.
Is the increasing concentration of toxic substances?
Detailed Solution. The increasing concentration of toxic chemicals at successively higher levels in a food chain is known as biomagnification.
Which of the following is an example of pollutants whose concentration increases in each trophic level?
An example is DDT whose concentration increases at each trophic level.
What are trophic levels give an example of a food chain and state the different trophic levels in it?
Plants are the producers, and represents the first trophic level. Grasshoppers are the primary consumers, and represent the second trophic level. Frogs are the secondary consumers, and represent the third trophic level. Snakes are the tertiary consumers and represent the fourth trophic level.
Why is the first trophic level in a food chain always a green plant?
Solution : The first trophic level is always a green plant because only plants can utilise the radiant energy of the sun and transform it to chemical form during photosynthesis. The first trophic level in a food chain is always a green plant.
Why does concentration increase biomagnification?
When predatory animals consume their prey they also consume all of the toxic chemicals within said prey. When these toxins aren’t easily excreted they build up in the animal’s system through bioaccumulation. Therefore, when the food chain progresses, concentrations increase or magnify.
How does harmful chemicals enter the food chain and finally into the human body?
These pesticides when washed away into the soil or water bodies get absorbed by the plants. When plants are consumed as food by man or other animals, the pesticides enter the food chain. Since the pesticides are non-biodegradable, these chemicals get accumulated progressively and enter our body.
How does movement of toxic compounds take place in food chain?
Biomagnification – effects of toxins are magnified (increase) in the environment through food chains. It occurs when the toxic burden of a large number of organism at a lower trophic level is accumulated and concentrated by a predator in a higher trophic level.
What is biomagnification in food chain?
Biomagnification refers to the condition where the chemical concentration in an organism exceeds the concentration of its food when the major exposure route occurs from the organism’s diet.
Why are animals at the top of the food chain at risk for poisons?
The higher up on the food chain an animal is, the more organisms the animals may eat that contain metals and chemicals. The more the animal eats, the more metals and chemicals are absorbed.
Which trophic level has the lowest concentration of chemical pollutants?
Explanation: The concentration of a pollutant in a food chain always starts with the lowest concentration in the first level, whether plant or animal. Each successive food chain level concentrates the pollutant more in the level species.
Which organism in this food chain will have the highest concentration of non biodegradable chemicals?
Hawk will have the highest concentration of non-biodegradable chemicals. The phenomenon associated is biomagnification.
