Advertisements
Advertisements
Question
If a harmful chemical enters a food chain comprising cat, mice and plants, which one of these organisms is likely to have the maximum concentration of the harmful chemical in its body?
Advertisements
Solution
The cat in the food chain will have the maximum concentration of harmful chemicals in its body because it lies at the highest trophic level.
APPEARS IN
RELATED QUESTIONS
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
Explain how the pesticides enter a food chain and subsequently get into our body.
Construct a short foodchain, ending with man.
Write one or two word for the following statement/definition :
Each level of food chain where transfer of energy takes place
What is a food chain?
If a grasshopper is eaten by a frog, then the energy transfer will be from ______.
In the food chain comprising of a snake, grass, insect, and frog, the secondary consumer is :
(a) insect
(b) snake
(c) frog
(d) grass
The sea water contains water beetles, tadpole, fish and weeds.
Which organisms can trap solar energy to make food?
Fill in the following blank with suitable word :
Grass → ........... → Human
Fill in the following blank with suitable word :
Plants → Antelope → ............
With the help of a food chain, explain how biological magnification of harmful chemicals can occur.
What is meant by bioconcentration of pesticides
If the energy available at the producer level in a food chain is 150 J, how much energy will be transferred to : tertiary consumer?
(a) 15 J
(b) 10 J
(c) 1.50 J
(d) 0.15 J
The harmful chemical which is accumulating in human beings through food chain is :
(a) benzenehexachloride
(b) dichlorodiphenyltrichloroethane
(c) chlorofluorocarbon
(d) abscisic acid
Bacteria and fungi are called decomposers.
Give one example of a food chain in an aquatic ecosystem?
What are autotrophs?
In the following food chain, vertical arrows indicate the energy lost to the environment and horizontal arrows indicate energy transferred to the next trophic level. Which one of the three vertical arrows (A, C and E) and which one of the two horizontal arrows (B and D) will represent more energy transfer? Give reason for your answer.
A food chain in a forest ecosystem
Assertion (A): The energy which passes to the herbivores does not come back to autotrophs.
Reason (R): The flow of energy in a food chain is unidirectional.
Use of several pesticides which results in excessive accumulation of pesticides in rivers of ponds, is a matter of deep concern. Justify this statement.
