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प्रश्न
Which category of organisms forms the starting point of a food chain?
उत्तर
Producers (green plants) form the starting point of a food chain.
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संबंधित प्रश्न
The first trophic level in a food chain is always a green plant. Why ?
Which of the following constitute a food-chain?
Name the organisms belonging to the second and the fourth trophic levels in the food chain comprising the following :
Frogs, Plants, Snakes, Hawk, Insects
At which trophic level a person is feeding when he is eating bread.
Some hunters are roaming in the plush green forest of Africa. They spot a deer and kill it. They decide to roast the deer there and then and eat it. When the hunters had just finished enjoying the feast of roasted deer, a lion attacks them. The lion kills one of the hunters and eats his flesh.
(a) write a food chain which provides food to lion in this case.
(b) Which animal (other than deer) the lion could look for food if he did not get the hunter as prey?
(c) Which other animal in the forest could have been in place of lion?
(d) How does the above food chain differ form the food chain such as : plants → goat → man?
Fill in the following blank with suitable word :
Lettuce → ............. → Fox
Explain why, the flow of energy in the ecosystem is said to be unidirectional.
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.:
Explain why, a food chain usually cannot have more than three or four steps.
Green plants utilize ______ percent of sun’s energy to prepare their food by the process of photosynthesis.
