Ecosystem and its Components
Ecosystem and its Components: Overview
This Topic covers sub-topics such as Ecosystems, Food Chains, Food Webs, Herbivores, Our Environment, Omnivores, Plankton, Phytoplankton, Types of Ecosystem, Carnivores, Decomposers, Energy Flow in an Ecosystem, Zooplankton and, Trophic Levels
Important Questions on Ecosystem and its Components
State the role of decomposers in an ecosystem.
Use the words, given in the box, to make a ‘food chain’. Also, identify the nature (terrestrial/aquatic) of the food chain.
| shark | fish | seal | algae |
_____ → _____ → _____ → _____
Use the words, given in the box, to make a ‘food chain’. Also, identify the nature (terrestrial/aquatic) of the food chain.
| dolphin | snail | tuna | plankton |
_____ → _____ → _____ → _____
Use the words, given in the box, to make a ‘food chain’. Also, identify the nature (terrestrial/aquatic) of the food chain.
| owl | grass | grasshopper | rat | snake |
_____ _____ _____ _____ _____
This flow chart represents: _____.
What are the nonliving components indispensable for us?
Why do food chains in an ecosystem do not have more than 4 to 5 trophic levels?
Why do producers always occupy the first trophic level in every food chain?
Why is balance or equilibrium necessary in a food web?
Suggest one word for each of the following statements:
a. An integrated network of physical and biological world where we live in.
b. The different levels of food chain involving transfer of matter and energy.
c. The parameters like temperature, rainfall, wind and soil of a habitat.
d. Organisms which depend on the producers either directly or indirectly for food
Why does a fifth trophic level not exist? Can't any other living being get energy from eating humans who occupy the highest place in a food chain?
What will be the amount of energy available to the organisms of the second trophic level of a food chain, if the energy available at the first trophic level is 10,000 joules?
Does Ebright have interest in tagging butterflies?
Describe how decomposers facilitate the recycling of matter in order to maintain balance in the ecosystem.
How much energy will be available to hawks in the food chain comprising mice,snake, paddy and hawks, if 20,000.J of energy is available to paddy from the sun?
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.
Assertion: A network of food chains existing together in an ecosystem is known as food web.
Reason: An animal like Kite cannot be part of food web.
In a food chain given below, which produces the food for herbivore?
Plants → Goat → Man
The physical and biological world where we live in _____. (atmosphere/environment)
