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प्रश्न
The sea water contains water beetles, tadpole, fish and weeds.
Which organism is a secondary consumer?
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उत्तर
The water beetle is the secondary consumer in the given food chain.
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संबंधित प्रश्न
The first trophic level in a food chain is always a green plant. Why ?
List two main components of ecosystem?
What are trophic levels? Give an example of a food chain and state the different trophic levels in it.
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
The following statement is true or false :
In biology, human beings are called producers.
Fill in the following blank with suitable word :
A series of organisms, each of which feeds on the next organism, the beginning of which is a green plant, is called a .............
What will happen if we kill all the organisms in one trophic level?
At which trophic level a person is feeding when he is eating apple.
What will happen if deer is missing in the food chain given below?
Grass → Deer → Tiger
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 we excessively use pesticides to protect the crops from diseases, then it may cause long-term damage to mankind'. Justify this statement.
Explain why, a food chain usually cannot have more than three or four steps.
What percentage of sun's energy falling on the leaves of green plants is utilised by the plants in the process of photosynthesis and stored as chemical energy of food?
(a) 99 per cent
(b) 10 per cent
(c) 1 per cent
(d) 20 per cent
A food chain comprises of cat, seed-eating bird, plants, and dog. The organism which will have the maximum concentration of harmful pesticides coming through the food chain is most likely to be :
(a) cat
(b) plants
(c) dog
(d) seed-eating bird
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
Your mother always thought that fruit juices are very healthy for everyone. One day she read in the newspaper that some brands of fruit juices in the market have been found to contain certain level of pesticides in them. She got worried as pesticides are injurious to our health.
(a) How would you explain to your mother about fruit juices getting contaminated with pesticides?
(b) It is said that when these harmful pesticides enter our body as well as in the bodies of other organisms they get accumulated and beyond a limit cause harm and damage to our organs. Name the phenomenon and write about it.
Observe the food web and answer the questions given below:
Why do all food chains start with plants?
The food chain begins with the energy given by the ______.
In a food chain grasshopper gets energy by eating frog.
