Which of the following organisms is likely to have maximum concentration of DDT algae fish water flea frog bird?
Which of the following organisms is likely to have a maximum concentration of DDT? Algae, fish, water flea, frog, bird. Ans. Bird.
What organism has the highest concentration of DDT?
The highest amount of DDT and derivatives residues were found in carnivore fish species, C. striatus which is the top predator of food web.
Which of the following is likely to have more concentration of DDT in its body?
Among the given animals, sea gull which is a fish eating bird and is present at higher trophic level, will have high levels of DDT depositon in its body.
Which organism will have the highest concentration of insecticide?
The organisms at the higher trophic level will have more concentration of the compounds. Here, fishes are at the highest trophic level, so they will accumulate maximum amount of pesticides. So, the correct answer is 'Fishes'.
What trophic level is most affected by DDT?
The higher the trophic level of an organism, the higher the concentration of DDT. DDT is excreted from the body very slowly and it is stored in fat. Thus, when an organism consumes another organism, the DDT in the prey accumulates in the predator.
DDT was sprayed in a lake to regulate breeding of mosquitoes. How would it affect the trophic levels
Which organism is most affected by DDT Why?
DDT is highly toxic to aquatic animals (14). DDT affects various systems in aquatic animals including the heart and brain (14). DDT is highly toxic to fish (14). Fish have a poor ability to detect DDT in water (14).
How did fish get DDT?
Even though it was banned in 1972, vegetables, meat, fish, and dairy products contain DDT. PCBs and DDT build up in sediment in rivers, lakes, and coastal areas, then accumulate in fish.
What is DDT in food chain?
Dichlorodiphenytrichloroethane (DDT) is an organochlorine insecticide with a broad spectrum of activities such as the control of pest in forest and on agricultural crops, household pests, vector-borne diseases like malaria, typhus, etc.
Which of the organisms will have highest concentration of non-biodegradable chemicals?
Solution : Hawk will have the highest concentration of non-biodegradable chemicals. <br> The phenomenon associated is biomagnification.
What effect did DDT have on birds specifically Raptors?
Chemicals like DDT interfered with the reproductive cycle of raptors. The poison built up in the falcons' bodies as they ate birds that, in turn, had eaten insects and plants contaminated with the chemicals. The result was diminished fertility, plus eggs with shells so thin, they broke under the parent's weight.
Why do DDT accumulate in tissues of an organism?
When an animal consumes food having DDT residue, the DDT accumulates in the tissue of the animal by a process called bioaccumulation. 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.
Why does DDT get concentrated as it moves up the food chain?
The concentration effect occurs because DDT is metabolized and excreted much more slowly than the nutrients that are passed from one trophic level to the next. So DDT accumulates in the bodies (especially in fat).
In which of the following aquatic ecosystem is the maximum biomagnification found?
The maximum biomagnification is among fishes in an aquatic ecosystem.
What is impact of DDT on fish eating birds?
High concentrations of DDT disturb calcium metabolism in birds, which causes thinning of eggshell and their premature breaking, eventually causing a decline in bird populations.
Which of the following groups is most susceptible to problems from DDT?
Plants/animals from which of the following groups are most susceptible to problems from DDT? primary producer, primary consumer, secondary consumer or tertiary consumer. Why? Tertiary consumers are more susceptible to problems from DDE because of biomagnification.
What concentration of DDT did the estuary have in it?
In an estuary off Long Island Sound, Rachel Carson learned that in the water the DDT measured only three parts per trillion (that's only 0.000003 ppm!). That was so low that it didn't seem dangerous at all.
Which organism in the following food web would contain the highest concentration of chemical pollutants name the phenomena and explain it?
Grass Grasshopper Frog Snake Eagle The organism which occurs at the highest trophic level in the food chain will have the maximum concentration of harrnful chemicals in its body. since, eagle occurs atthe highest trophic level, therefore, it will have the maximum concentration of harrnful chemicals in its body.
Where is the maximum concentration of non-biodegradable chemicals in a food chain and why?
The last trophic level 'Hawk' will have highest concentration of Non-Biodegradable Chemicals. This phenomenon is called 'Biomagnification'.
Which of the following organism receives the highest energy in the food chain?
According to the pyramid of energy, the energy content is maximum in autotrophs or producers. Autotrophs are the plants which prepare their food by photosynthesis.
What animals does DDT affect?
DDT has been suggested to be toxic to a range of wildlife including birds and marine animals, and its metabolite DDE (dichlorodiphenyldichloroethylene) causes eggshell thinning of certain bird species such as bald eagle and brown pelican, leading to declines of their populations (1,2).
What products have DDT in them?
Animal and fatty foods contain the highest levels of DDT and PCBs because they are stored in fat and increase in concentration as they move up the food chain. Even though it was banned in 1972, vegetables, meat, fish, and dairy products contain DDT.
How much DDT is in fish?
According to da Silva Rabitto et al. (2011) DDT or/and DDE contamination were detected in 95–100% of the laboratory tested fish samples from Amazon, ranging from 0.54 to 15.34 ng DDTs g−1 quantities .
What fish is DDT found in?
The highest DDT levels were found in fish from Lake Rerewhakaaitu, and eggs from these fish showed the least viability. Mortality was relatively low among eggs from fish out of the other lakes. Thus, DDT may possibly contribute to the high mortality found in eggs from Lake Rerewhakaaitu fish.
Is DDT toxic for fish?
Aquatic toxicology. DDT has very high toxicity to most species, except for moderate to low toxicity to freshwater molluscs, algae and flatworms. Freshwater fish: 30 spp, 96 hours (48 hours only for 1 species), 0.45 to 123 µg/L.
How is bird population affected by DDT?
Biomagnification of DDT leads to an increase in its concentration at the higher trophic level and its higher concentration in birds leads to the disturbance in their calcium metabolism. This causes the premature breaking of eggs in birds due to thinning of eggshell.