Advertisements
Advertisements
Question
Which of the following group of organisms are not constituents of a food chain?
- grass, lion, rabbit, wolf
- plankton, man, fish, grasshopper
- wolf, grass, snake, tiger
- frog, snake, eagle, grass, grasshopper
Options
(i) and (iii)
(iii) and (iv)
(ii) and (iii)
(i) and (iv)
Advertisements
Solution
(ii) and (iii)
Explanation:
A food chain is a sequence of living organisms in a community or ecosystem, in which one organism is consumed the other.
APPEARS IN
RELATED QUESTIONS
Will the impact of removing all the organisms in a trophic level be different for different trophic levels? Can the organisms of any trophic level be removed without causing any damage to the ecosystem?
In the following food chain, 20,000 J of energy was available to the plants. How much energy would be available to man in this chain?
Plants → Sheep → Man
Fill in the following blank with suitable word :
Decomposer organisms are..........in their action.
Explain the terms 'producer' and 'consumer'. Give two examples of producers and two of consumers.
What is meant by a primary consumer, secondary consumer and a tertiary consumer? Give one example of each.
At which trophic level a person is feeding when he is eating eggs.
Construct a short foodchain, ending with man.
Organisms of a higher trophic level which feed on several types of organisms belonging to a number of lower trophic levels constitute the ______.
The sea water contains water beetles, tadpole, fish and weeds.
Which organisms can trap solar energy to make food?
The following is a food chain that ends with human :
How does this food chain differ form a usual food chain involving human such as : plants → goat → human?
A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y
Name two zooplanktons.
Name the process in which a harmful chemical enters the food chain and gets concentrated at each trophic level.
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?
Fill in the following blank with suitable word :
Pesticides enter the food chain at the ...........level
What is meant by bioconcentration of pesticides
Most of the water surface of a lake is covered with algae. This algae is part of the food chain which also includes small fish, bird, larvae and big fish. Which of the following will obtain the maximum energy?
(a) big fish
(b) bird
(c) larvae
(d) small fish
Observe the food web and answer the questions given below:
Why do all food chains start with plants?
Animals that eat both plants and animals are called as Carnivores.
Use of several pesticides which results in excessive accumulation of pesticides in rivers of ponds, is a matter of deep concern. Justify this statement.
