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प्रश्न
List two main components of ecosystem?
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उत्तर
Following are the components of environment:-
(a) Biotic component
(b) Abiotic component
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संबंधित प्रश्न
What name has been given to those organisms which break down the complex organic compounds present in dead animals and plants?
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 |
If a grasshopper is eaten by a frog, then the energy transfer will be from ______.
| The following is a food chain that ends with human: plants → bee → human |
- Explain how plants provide food for bees.
- How do bees provide food for humans?
- How does this food chain differ from a usual food chain involving human such as: plants → goat → human?
- Do you think that the food chain given in this question can really be regarded as a food chain? Explain your answer.
What is ten per cent law? Explain with an example.
Explain how harmful chemicals enter our bodies.
'If we excessively use pesticides to protect the crops from diseases, then it may cause long-term damage to mankind'. Justify this statement.
Food chains are very important for the survival of most species.
Matter and energy are two fundamental inputs of an ecosystem. Movement of:
In the following food chain, vertical arrows indicate the energy lost to the environment and horizontal arrows indicate energy transferred to the next trophic level. Which one of the three vertical arrows (A, C and E) and which one of the two horizontal arrows (B and D) will represent more energy transfer? Give reason for your answer.
A food chain in a forest ecosystem
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.
