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प्रश्न
What is the role of decomposers in the ecosystem?
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उत्तर
Decomposers decompose dead plants and animals and hence act as cleansing agents of the environment.
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संबंधित प्रश्न
List two main components of ecosystem?
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
Draw the food chain with four trophic levels.
At which trophic level a person is feeding when he is eating fish.
The decomposers in an ecosystem ______.
The sea water contains water beetles, tadpole, fish and weeds.
Which organisms are (i) predators, and (ii) prey?
The following is a food chain that ends with human :
plants → bee → human
Explain how plants provide food for bees.
The following is a food chain that ends with human :
plants → bee → human
How do bees provide food for humans?
What would happen to the number of rabbits and grass plants if the number of foxes decreased?
Give one example of a food chain having four organisms. Below each organism write the three appropriate terms from the part (a) above which you think it represents.
What is ten per cent law? Explain with an example.
Explain how harmful chemicals enter our bodies.
Consider the following food chain
(i) Plants → Mice → Snakes → Hawks
(ii) Plants → Mice →Hawks
If energy available at the producer level in both the food chains is 100 J, in which case will hawks get more energy as food and by how much? Justify your answer.:
What provides the energy which then flows through a food chain?
(a) glucose
(b) oxygen
(c) respiration
(d) sunlight
An aquatic food chain comprises of the organisms like tadpoles, weeds, fish and water beetles. The organism which gets the minimum energy through this food chain is :
(a) water beetles
(b) tadpoles
(c) weeds
(d) fish
The ten per cent law is associated with
(a) transfer of energy from various trophic levels to decomposers in a food chain
(b) transfer of ATP energy into muscular energy
(c) transfer of chemical energy from one organism to another
(d) transfer of sun's energy to the organisms called producers.
"Energy flow in food chains is always unidirectional". Justify this statement. Explain how the pesticides enter a food chain and subsequently get into our body.
Arrange the following in a correct sequence and form a food chain
Human → Insect → Algae → Fish
Which of the following is an autotroph?
Observe the food web and answer the questions given below:
Why do all food chains start with plants?
