What happens to the concentration of DDT in each trophic level 1 point A decreases B increases C remains unchanged D becomes zero?

Hence, the correct answer is 'Increases'.

What happens to the concentration of DDT in each trophic level?

Solution : DDT concentration continuously increases in successive trophic levels in a food chain. This phenomenon is known as biological magnification or biological amplification.

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.

What is the concentration of DDT for first trophic level?

Hence, the correct answer is '25 ppm'

What happens when DDT enter in food chain?

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.

DDT was sprayed in a lake to regulate breeding of mosquitoes. How would it affect the trophic levels

Where is the highest concentration of DDT found?

The highest amount of DDT and derivatives residues were found in carnivore fish species, C. striatus which is the top predator of food web. In contrast, the lowest residue levels of DDT and derivatives were found in the omnivores, P. gonionotus.

What is DDT class 10th?

DDT, or dichlorodiphenyltrichloroethane, is a chemical compound with the formula C₁₄H₉Cl₅. Under standard conditions for temperature and pressure (STP), this chemical compound exists as a colourless and tasteless crystalline solid.

What do you notice about the concentration of DDT as you go up the energy pyramid?

Explanation: DDT increases or biomagnifies if we look at a food chain. DDT is fat-soluble, meaning animals store it in fatty tissues. It also takes a relatively long amount of time to break down.

What is the impact of DDT on birds and other higher trophic level organisms?

Rather, DDT and its relatives alter the bird's calcium metabolism in a way that results in thin eggshells. Instead of eggs, heavily DDT-infested Brown Pelicans and Bald Eagles tend to find omelets in their nests, since the eggshells are unable to support the weight of the incubating bird.

Is the following in the correct sequence of increasing order of DDT concentration?

Hence, the correct answer is 'Water-0.003ppm, zooplankton- 0.04ppm, small fish-0.5ppm, large fish-2ppm, fish eating birds-25ppm'

What is biomagnification of DDT?

Biomagnification happens when toxic chemicals, like DDT, whose remains in the environment are consumed indirectly by organisms through food. When an organism in the higher food chain consumes the lower organism containing such chemicals, the chemicals can get accumulated in the higher organism.

Where is DDT stored and accumulated within an organism?

DDT tends to accumulate in the fatty tissues of insects, wildlife, and people, but produces no known toxic effects while it is stored in the fat (2).

What concentration of DDT did the birds have in their bodies?

The birds' brains contained concentrations of DDE, a breakdown product of DDT, ranging from 155 to 1,043 parts per million, with an average of 552.

What do you notice about the levels of DDT going from water to phytoplankton and on up to Pelicans?

The level of DDT in water is the same but as it goes into phytoplankton and up to pelicans, it started to gradually increase. When toxins increase as you go up the food chain/food web, it is called biomagnification.

What are the effects of DDT?

Following exposure to high doses, human symptoms can include vomiting, tremors or shakiness, and seizures. Laboratory animal studies showed effects on the liver and reproduction. DDT is considered a possible human carcinogen.

What is impact of DDT on fish eating birds Class 10?

The effect of DDT on fish eating birds are very high because they are at the Highest level of the chain. When fish eating birds , eat fish they increase the concentration of DDT in them ,which cause the thinning of shell of egg ,and premature breaking of egg. Leads to death .

How does DDT in the environment affect many birds quizlet?

how does DDT affect animals? for animals, such as birds, it can disturb the reproductive processes, such as thinning the eggshells or lead to imbalances of ions in cells that affects the nervous system in some fish.

What happens to pelicans when they have a high level of DDT in their bodies?

Since a pelican eats a lot of fish, more DDT builds up in its tissues and is trapped in its body. What happens to pelicans when they have a high level of DDT in their bodies? The pelican's eggs break very easily, and they are unable to reproduce.

What is the most significant effect of DDT towards a lake ecosystem over time?

DDT's devastating effect on the aquatic environment has been thoroughly studied. Due to it's low solubility, it has a greater rate of bioaccumulation in water, and thus poses a great long-term threat to aquatic wildlife.

What is DDT Mcq?

Solution(By Examveda Team)

As DDT harms the environment it is a pollutant. It is used to kill the mosquitoes thus, it is a chemical insecticide and not antibiotic.

Why is DDT persistent?

DDT is an extremely persistent compound due to its near insolubility in water and tendency to bioaccumulate in fatty tissue and biomagnify throughout trophic levels. By 1972, DDT use was banned in the United States and worldwide production and use began to decrease as well.

What is DDT in organic chemistry?

DDT, abbreviation of dichlorodiphenyltrichloroethane, also called 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane, a synthetic insecticide that belongs to the family of organic halogen compounds and is highly toxic toward a wide variety of insects as a contact poison that apparently exerts its effects by disorganizing ...

Is the amount of DDT at each level in this model is accurate compared to the real world?

This lab is not accurate compared to the "real world". In the "real world", there isn't as much DDT to begin with. In the lab, our DDT was around 0.8 for each phytoplankton while in the "real world" it is around 0.4.

How many times higher is the concentration of DDT in the plankton than in the water?

(Concentrations of DDT 10 times greater than those in the plankton have been measured in clams.) The process of concentration goes right on up the food chain from one trophic level to the next.

Which of the following has maximum amount of DDT among the option given below?

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.