Advertisements
Advertisements
Question
Draw the food chain with four trophic levels.
Advertisements
Solution
A food chain with four trophic levels can be shown as follows.
Grass →Insect →Frog → Eagle
APPEARS IN
RELATED QUESTIONS
List two main components of ecosystem?
List two important roles play in the environment by decomposers.
Construct a food chain comprising the following :
Snakes, Hawk, Rats, Plants
Fill in the following blank with suitable word :
A series of organisms, each of which feeds on the next organism, the beginning of which is a green plant, is called a .............
Name one decomposer.
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?
Write down a food chain in the sea.
Write down a food chain which ends with humans.
Give one example of a simple food chain.
Which of the following are decomposers of dead organisms?
| Bacteria | Fungi | Viruses |
| (a) no | yes | yes |
| (b) yes | no | yes |
| (c) yes | yes | no |
| (d) yes | yes | yes |
What will happen if deer is missing in the food chain given below?
Grass → Deer → Tiger
Organisms which synthesise carbohydrates from inorganic compounds by using radiant energy are called ______.
A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y
Name the organism which Y could be.
Explain why, the flow of energy in the ecosystem is said to be unidirectional.
Name and state the law given by Lindeman which tells us how much energy entering a particular trophic level of organisms is available for trasnsfer to the next higher trophic level.
Which of the following limits the number of trophic levels in a food chain?
(a) insufficient food supply from producer level
(b) decrease in energy at higher trophic levels
(c) increase in the number of organisms at higher trophic levels
(d) accumulation of harmful chemicals at higher trophic levels
What are decomposers? What will be the consequence if the decomposers are completely eradicated from an ecosystem? Give justification in support of your answer.
Bacteria and fungi are called decomposers.
Food chains are very important for the survival of most species.
Matter and energy are two fundamental inputs of an ecosystem. Movement of:
Define – Heterotrophs.
