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प्रश्न
What provides the energy which then flows through a food chain?
(a) glucose
(b) oxygen
(c) respiration
(d) sunlight
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उत्तर
Sunlight
Sunlight provides energy to plants for preparing food, and this energy is then passed on to the next trophic levels through a food chain.
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संबंधित प्रश्न
State with reason any two possible consequences of elimination of decomposers from the Earth.
List two important roles play in the environment by decomposers.
What are the various steps of food chain called?
Which organisms belong to third and fourth trophic levels in the food chain comprising the following?
Rats, Plants, Hawk, Snakes
Explain the terms 'producer' and 'consumer'. Give two examples of producers and two of consumers.
What is a trophic level?
What is the difference between the food habits of organisms belonging to the first and the third trophic levels? Give one example each of the organisms belonging to these two trophic levels.
Write one or two word for the following statement/definition :
Each level of food chain where transfer of energy takes place
Organisms which synthesise carbohydrates from inorganic compounds by using radiant energy are called ______.
Which of the following is not a producer?
(a) grass
(b) zooplankton
(c) phytoplankton
(d) paddy
A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y
Which organism in the above food chain is a (1) primary consumer, and (2) tertiary consumer?
Fill in the following blank with suitable word :
Grass → ........... → Human
Fill in the following blank with suitable word :
Plants → Antelope → ............
Explain how harmful chemicals enter our bodies.
A food chain consists of fish, larvae, phytoplanktons and birds. The level of pesticides in water in which the fish, larvae and phytoplanktons live is quite high.
Write the food chain comprising all the organisms mentioned above.
What are decomposers? What will be the consequence if the decomposers are completely eradicated from an ecosystem? Give justification in support of your answer.
Bacteria and fungi are called decomposers.
Arrange the following in a correct sequence and form a food chain
Human → Insect → Algae → Fish
Green plants utilize ______ percent of sun’s energy to prepare their food by the process of photosynthesis.
Use of several pesticides which results in excessive accumulation of pesticides in rivers of ponds, is a matter of deep concern. Justify this statement.
