Home
Class 8
BIOLOGY
Refer to the given food chain. Phytop...

Refer to the given food chain.
Phytoplankton (Diatom) `to` Daphnia `to` Herring Salmon `to` Bald eagle
If a non-biodegradable insecticide known as DDT was present in the water, in which of the following organisms will most of the DDT eventually accumulate?

A

Salmon

B

Bald eagle

C

Herring

D

Daphnia

Text Solution

AI Generated Solution

The correct Answer is:
To determine in which organism most of the DDT will accumulate in the given food chain (Phytoplankton → Daphnia → Herring → Salmon → Bald Eagle), we need to understand the concept of biomagnification and the food chain dynamics. ### Step-by-Step Solution: 1. **Identify the Food Chain**: - The food chain consists of the following organisms: - Phytoplankton (Diatom) → Daphnia → Herring → Salmon → Bald Eagle. 2. **Understand the Role of DDT**: - DDT is a non-biodegradable insecticide that can accumulate in the environment. When it enters the water, it affects the organisms present in the food chain. 3. **Recognize Biomagnification**: - Biomagnification is the process where the concentration of a substance, such as DDT, increases at each trophic level of the food chain. This means that as you move up the food chain, the amount of DDT accumulates in the bodies of organisms. 4. **Analyze Each Trophic Level**: - **Phytoplankton**: The primary producers, which will absorb DDT from the water. - **Daphnia**: The primary consumers that eat phytoplankton and will accumulate some DDT. - **Herring**: Secondary consumers that eat Daphnia and will accumulate more DDT than Daphnia. - **Salmon**: Tertiary consumers that eat Herring and will accumulate even more DDT. - **Bald Eagle**: The top predator in this food chain that eats Salmon and will have the highest concentration of DDT. 5. **Conclusion**: - Since DDT accumulates at each trophic level, the organism at the top of the food chain, which is the Bald Eagle, will have the most significant accumulation of DDT. Therefore, the answer is **Bald Eagle**. ### Final Answer: Most of the DDT will eventually accumulate in the **Bald Eagle**.
To determine in which organism most of the DDT will accumulate in the given food chain (Phytoplankton → Daphnia → Herring → Salmon → Bald Eagle), we need to understand the concept of biomagnification and the food chain dynamics. ### Step-by-Step Solution: 1. **Identify the Food Chain**: - The food chain consists of the following organisms: - Phytoplankton (Diatom) → Daphnia → Herring → Salmon → Bald Eagle. ...
Promotional Banner

Topper's Solved these Questions

  • POLLUTION OF AIR AND WATER

    SCIENCE OLYMPIAD FOUNDATION |Exercise ACHIEVERS SECTION (HOTS) |5 Videos

  • NSO QUESTION PAPER 2020-21 SET A

    SCIENCE OLYMPIAD FOUNDATION |Exercise SCIENCE|14 Videos

  • REPRODUCTION AND ENDOCRINE SYSTEM

    SCIENCE OLYMPIAD FOUNDATION |Exercise ACHIEVERS SECTION (HOTS)|4 Videos

Similar Questions

Explore conceptually related problems

If the concentration of insecticide DDT in a pond water is 0.04 ppm, which of the following sequences of DDT concentration would be correct for algae-fishes-man food chain?

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. (a) In which organisms the pesticides enter from the polluted water ? What is the level of organisms known as ? (b) Which organism will have the maximum amount of pesticides accumulated through the food chain ? What is this process known as ? (c) Write the food chain comprising all the organisms mentioned above. (d) Which other organism you could write in place of bird in the above food chain ?

Which of the following statements is incorrect about DDT I. DDT stands for dichlorodiphenyltrichloropropane and is an organochlorine insecticide . II. DDT is soluble in water but insoluble in organic solvents. III. High concentrations of DDT disturb calcium metabolism in birds, which causes thinning of eggshell and their premature breaking . IV. In fish - eating birds, the DDT can ultimately reach a very high level of 25 ppm.

(a) "Improvements in our lifestyle have resulted in greater amounts of waste generation". Give two examples to support the given statement. Suggest one change that we can incorporate in our lifestyle in order to reduce non-biodegradable waste. (b) The following organisms form a food chain. Write the food chain. Insect, Hawk, Grass, Snake, Frog Which of these will have highest concentration of non-biodegradable chemicals? Name the phenomenon.

Read the following passage Human body is made up of five important components, of which water is the main component. Food as well as potable water is essential for every human being. The food is obtained from plants through agriculture, Pesticides are being used extensively for a high yield in the fields. These pesticides are absorbed by the plants from the soil along with water and minerals and from the water bodies these pesticides are taken up by the aquatic animals and plants. As these chemicals are not biodegradable, they get accumulated progressively at each trophic level. The maximum concentration of these chemicals gets accumulated in our bodies and greatly affects the health of our mind and body. With regard to various food chains operating in an ecosystem, man is a:

Read the following passage Human body is made up of five important components, of which water is the main component. Food as well as potable water is essential for every human being. The food is obtained from plants through agriculture, Pesticides are being used extensively for a high yield in the fields. These pesticides are absorbed by the plants from the soil along with water and minerals and from the water bodies these pesticides are taken up by the aquatic animals and plants. As these chemicals are not biodegradable, they get accumulated progressively at each trophic level. The maximum concentration of these chemicals gets accumulated in our bodies and greatly affects the health of our mind and body. Various steps in a food chain represent:

Read the following passage Human body is made up of five important components, of which water is the main component. Food as well as potable water is essential for every human being. The food is obtained from plants through agriculture, Pesticides are being used extensively for a high yield in the fields. These pesticides are absorbed by the plants from the soil along with water and minerals and from the water bodies these pesticides are taken up by the aquatic animals and plants. As these chemicals are not biodegradable, they get accumulated progressively at each trophic level. The maximum concentration of these chemicals gets accumulated in our bodies and greatly affects the health of our mind and body. First link in any food chain is usually green plants. Which of the following statements gives the correct explanation about the above statement?