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प्रश्न
Accumulation of non-biodegradable pesticides in the food chain in increasing amount at each higher trophic level is known as
पर्याय
eutrophication
pollution
biomagnification
accumulation
उत्तर
biomagnification
Explanation -
Biomagnification is the phenomenon through which certain pollutants such as non-biodegradable pesticides get accumulated in tissues in increasing concentration at successive trophic levels along the food chains.
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संबंधित प्रश्न
Which organisms belong to third and fourth trophic levels in the food chain comprising the following?
Rats, Plants, Hawk, Snakes
A student went to study a local pond. In one part of the pond she noticed tadpoles scraping at some pond weed. In another part she saw a water beetle holding a tadpole in its jaws.
(a) Construct a food chain for the pond.
(b) How many links are there in this chain?
What will happen if deer is missing in the food chain given below?
Grass → Deer → Tiger
Organisms of a higher trophic level which feed on several types of organisms belonging to a number of lower trophic levels constitute the ______.
Fill in the following blank with suitable word :
Lettuce → ............. → Fox
'If we excessively use pesticides to protect the crops from diseases, then it may cause long-term damage to mankind'. Justify this statement.
What does garbage consist of?
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?
If 100 J energy is available at the producer level in a food chain then the energy available to the secondary consumer will be ______.
What is Autotrophs?
