Which of the following limits the number of trophic levels in a food chain ?a)Decrease in energy at higher levelsb)Deficient food supplyc)Polluted aird)WaterCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

There is loss of energy take place from going to one level to another level.

According to 10% law, only 10% energy tarsfered to next trophic level.

This limit the trophic level in food chain

Answer

A is correct

Answer

According to 10% law, The energy that is available for transfer at each successive level is 10% of the previous level. Due to this less energy is available at higher levels. Thus, option (A) is correct.

Answer

Option (a)becoz-->>

When a consumer eats a plant, it gains energy from the plant. That energy is used for growth, reproduction, and other biological processes. Some of that energy is also lost through heat loss. Thus, when a predator eats that consumer, all of the energy the consumer gained from the plant is not available to the predator.

Answer

Yes , absolutely!!
because tropic levels in the food chain travels by the 10% of energy .....
so when the whole energy consumed, it will limit the number of levels in food chain..

Answer

There are several factors that can limit the number of trophic levels in a food chain, but the primary factor is the decrease in energy at higher levels. Here's a detailed explanation of why this is the correct answer:

Energy Flow in Food Chains:
In a food chain, energy flows from one trophic level to another. The primary producers, such as plants, obtain energy from the sun through photosynthesis. They are then consumed by herbivores (primary consumers), which are in turn consumed by carnivores (secondary consumers), and so on. Each trophic level transfers energy to the next level through feeding.

Decrease in Energy at Higher Levels:
As energy is transferred from one trophic level to the next, a significant amount of energy is lost in the process. This is due to various factors such as metabolic processes, heat loss, and incomplete digestion. As a result, the amount of energy available to each successive trophic level decreases.

Energy Loss in Trophic Levels:
- Inefficient Energy Transfer: When herbivores consume plants, they can only convert a small percentage of the energy stored in the plants into their own biomass. This is because not all parts of the plant are edible, and some energy is lost during digestion and metabolic processes.
- Energy Loss through Respiration: Animals also lose energy through respiration. They use energy for their own cellular respiration, which is the process of converting glucose into ATP (adenosine triphosphate) to fuel their own metabolic activities. This energy is not available to the next trophic level.
- Heat Loss: Energy is also lost as heat during various physiological processes, such as maintaining body temperature. This heat energy is not available to the next trophic level.
- Incomplete Digestion: Animals may not be able to fully digest all the biomass they consume, resulting in energy loss in the form of undigested waste.

Consequence of Decreased Energy Availability:
The decrease in energy availability at higher trophic levels limits the number of trophic levels that can be sustained in a food chain. As energy decreases, there is simply not enough energy available to support the metabolic needs and biomass of organisms at higher trophic levels. This ultimately restricts the number of levels that can exist in a food chain.

In conclusion, the decrease in energy at higher trophic levels is the primary factor that limits the number of trophic levels in a food chain. As energy is lost through various processes, there is not enough energy available to sustain organisms at higher trophic levels, leading to a decrease in the number of trophic levels.

Similar Class 10 Doubts

Which of the following statements about food chain and energy flow through ecosystem is false?

Give an example of food chain with four trophic level B) the number of trophic levels in a food chain is limited. Why ?

What are the differences between food chain and trophic levels?

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