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प्रश्न
The sea water contains water beetles, tadpole, fish and weeds.
Which organisms can trap solar energy to make food?
उत्तर
Weeds can trap solar energy to make food.
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संबंधित प्रश्न
Fill in the following blank with suitable word :
Decomposer organisms are..........in their action.
What is meant by a primary consumer, secondary consumer and a tertiary consumer? Give one example of each.
Can the organisms of any trophic level be removed without causing any damage to the ecosystem? Will the impact of removing all the organisms in a trophic level be different for different trophic levels?
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.:
A forest ecosystem having a lot of green plants has some foxes, lions and rabbits in it.
(a) Write a food chain comprising all the four organisms mentioned above.
(b) Name (i) one herbivore, and (ii) two carnivores, in this food chain.
(c) Name the link which is a predator as well as a prey.
(d) Name (i) second trophic level, and (ii) third trophic level.
(e) Which link of this food chain can feed on second trophic level as well as third trophic level, independently?
(f) If the sun provides 1000 J of energy to the plants, then how much energy will be transferred to fox through the food chain.
What are decomposers? What will be the consequence if the decomposers are completely eradicated from an ecosystem? Give justification in support of your answer.
In a given food chain if the amount of energy at the fourth trophic level is 6 kJ, what will be the energy available at the producer level?
Food chains are very important for the survival of most species.
Matter and energy are two fundamental inputs of an ecosystem. Movement of:
Which group of organisms are not constituents of a food chain?
- Grass, lion, rabbit, wolf
- Plankton, man, fish, grasshopper
- Wolf, grass, snake, tiger
- Frog, snake, eagle, grass, grasshopper
Study the picture given below showing three food chains (a), (b) and (c) and answer the following questions:
- Name the type of ecosystems that exist in food chains (b) and (c).
- The first trophic level in all food chains is producers. Why? What percentage of solar energy do these producers capture for their use?
- Why are the arrows shown in the diagram in one direction only and not vice versa? Justify.
