Botany - Ecosystem Question with Solution | TestHub
Read the following statements.
(i) Removal of tigers from an area will result in increased growth of vegetation of that area.
(ii) Organisms at each trophic level depend on those at the lower trophic level for their energy demands.
(iii) Food chains are sustained by producers and decomposers.
(iv) In a food chain, some organism like sparrow operates at one trophic level only.
Select an option which shows CORRECT statements.
Options:
Answer:
Solution:
The energy gain in an organism at each trophic level is utilized in all metabolic activities and also lost as heat to the surrounding. Thus, lower amount of energy is transferred to succeeding trophic level in a food chain. Organisms at each trophic level depend on those at the lower trophic level for their energy demands.
The dead and decaying organic content are broken down to inorganic substances by the process called decomposition. It is brought about by decomposers. Producers and decomposers help in maintaining the food chain.
Removal of tigers from an area will result in decreased growth of vegetation of that area as the increased population of deer will consume more vegetation. Sparrow in a food chain can exist at two different trophic levels, while feeding on grains it occupies second trophic level, while feeding on worms they occupy third trophic level.
