Advertisements
Advertisements
Question
Will the impact of removing all the organisms in a trophic level be different for different trophic levels? Can the organisms of any trophic level be removed without causing any damage to the ecosystem?
Advertisements
Solution
Yes. Depending on the trophic level, various organisms will be affected differently if all of them are eliminated. For instance, eliminating all of the producers (T1) will negatively impact both herbivores and carnivores as well as all other consumer types, whereas eliminating all of the herbivores will negatively impact only the carnivores while increasing the number of producers.
No. The removal of any organism at any trophic level will always have a negative impact on the ecosystem. For example, eliminating tigers and lions, two of the top carnivores will quickly increase the number of deer, which will then quickly consume the available vegetation, leading to a shortage of vegetation and a deer population crash.
APPEARS IN
RELATED QUESTIONS
Why are green plants called producers?
The first trophic level in a food chain is always a green plant. Why ?
Which of the following constitute a food-chain?
What are the various steps of food chain called?
A food chain represents a unidirectional flow of X. What is X?
Fill in the following blank with suitable word :
In nature, all green plants are............ whereas animals are consumers.
Give one example of a simple food chain.
What is a 'food web'? Show its formation.
In a food chain, the initial organism is usually :
(a) photosynthetic
(b) herbivore
(c) saprophytic
(d) parasitic
What will happen if deer is missing in the food chain given below?
Grass → Deer → Tiger
A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y
Name two zooplanktons.
Name the process in which a harmful chemical enters the food chain and gets concentrated at each trophic level.
In the food chain given below, if the amount of energy available at fourth trophic level is 5 kJ, what was the energy available at the producer level?
Grass → Grasshopper → Frog → Snake → Hawk
(a) 500 kJ
(b) 50 kJ
(c) 5000 kJ
(d) 5 kJ
A food chain consists of fish, larvae, phytoplanktons and birds. The level of pesticides in water in which the fish, larvae and phytoplanktons live is quite high.
Write the food chain comprising all the organisms mentioned above.
Bacteria and fungi are called decomposers.
Arrange the following in a correct sequence and form a food chain
Human → Insect → Algae → Fish
Give one example of a food chain in an aquatic ecosystem?
Green plants utilize ______ percent of sun’s energy to prepare their food by the process of photosynthesis.
Observe the food web and answer the questions given below:
Why do all food chains start with plants?
In the following food chain, only 2J of energy was available to the peacocks. How much energy would have been present in Grass? Justify your answer.
GRASS → GRASS HOPPER → FROG → SNAKE → PEACOCK
