Flow of Energy in Ecosystem
Flow of Energy in Ecosystem: Overview
This topic covers concepts, such as, Food Chains, Trophic Levels,Biomagnification and Energy Flow Models etc.
Important Questions on Flow of Energy in Ecosystem
Which of the following is the given ecological pyramid?
The correct representation of the pyramid is,
10% law of energy transfer was given by:
The food chain in which microbes breakdown energy rich compounds synthesized by producers is called:
Given below is one of the types of ecological pyramids.
This type represents:
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 |
_____ _____ _____ _____ _____
In an ecosystem if dry weight of producers is 809 Kg m-2. Then what will be the biomass of tertiary consumers?
The first trophic level in a food chain is always a green plant why?
Which of the following is most likely to be true about the percentage of energy received by a horse and a crow from the producers in different food chains?
| Horse | Crow | |
| 1. | always the same | always the same |
| 2. | always the same | can be different |
| 3. | can be different | always the same |
| 4. | can be different | can be different |
Given below is a food web representative of the Arctic region.
Increasing temperatures have been causing changes in the ocean ecosystem. These changes have caused the population of Arctic cod to decline rapidly.
Which of the following statement/s is/are most likely to be TRUE based on this information?
P) The population of arctic birds will increase.
Q) The ringed seal will slowly become extinct.
R) The harbour seal will be dependent on capelins alone.
A substrate is the surface on which an organism lives or survives on.
Which of the following acts as the substrate that provides energy in a detritus food chain?
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?
Pyramid of energy is inverted in
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?
In the given food chain in the diagram if there is merciless killing of bugs, what will be the effect on the ecosystem?
Food chain operating on decaying cow dung or organic remains is referred to as
