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प्रश्न
Name two predators of snakes in a food web operating in a forest ecosystem.
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उत्तर
Hawks and peacocks are two predators of snakes in a food web operating in a forest ecosystem.
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संबंधित प्रश्न
"Energy flow in a food chain is unidirectional" Justify this statement.
Fill in the following blank with suitable word :
In nature, all green plants are............ whereas animals are consumers.
At which trophic level a person is feeding when he is eating apple.
Give one example of a simple food chain.
Which of the following represents a possible food chain found in a pond :
| Primary producers |
Primary consumers | Secondary consumers |
| (a) green algae | fish | mosquito larvae |
| (b) fish | green algae | mosquito larvae |
| (c) mosquito larvae | fish | green algae |
| (d) green algae | mosquito larvae | fish |
In a food chain, the third trophic level is always occupied by :
(a) carnivores
(b) herbivores
(c) decomposers
(d) producers
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?
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.
The following statement is true or false :
Only 10 per cent of the light energy given by the sun is available for transfer at each higher trophic level in a food chain.
Why are there rarely more than five links (or five organisms) in a food chain?
Fill in the following blank with suitable word :
Pesticides enter the food chain at the ...........level
Fill in the following blank with suitable word :
Grass → ........... → Human
Will the levels of biological magnification be different at different levels of the ecosystem?
The surface of water in a lake appears green due to a layer of tiny free-floating organisms X on its surface. The lake water also contains organisms like water beetle, fish and tadpole. The sun shines over the lake water and provides energy for the functioning of this lake ecosystem.
(a) What could organisms X be?
(b) Write a food chain comprising of all the four organisms mentioned.
(c) What is the general name of the food chains like the one written above?
(d) Name (i) secondary consumer (ii) producer (iii) tertiary consumer, and (iv) primary consumer, in the above food chain.
(e) If the tertiary consumer gets 0.2 J of energy from the secondary consumer, then how much energy was radiated by the sun to the producer?
"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.
Write the importance of the food chain.
We should reduce the use of the plastic bags, bottles etc. because ______.
If 100 J energy is available at the producer level in a food chain then the energy available to the secondary consumer will be ______.
Each level in the food chain is called a ______ level.
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.
