Advertisements
Advertisements
Question
The number of trophic levels in an ecosystem are limited. Comment.
Solution
In a food chain, only 10% of the total amount of energy is passed on to the next trophic level from the previous trophic level. So, there is a decrease in the amount of energy available at the successive trophic levels. As we move higher up in the food chain the amount of energy diminishes to a level at which it cannot sustain any trophic level, thereby limiting the number of trophic levels.
APPEARS IN
RELATED QUESTIONS
“It is often said that the pyramid of energy is always upright. On the other hand, the pyramid of biomass can be both upright and inverted.” Explain with the help if examples and sketches.
In a food chain, the herbivores are represented by
(A) producers
(B) primary consumers
(C) secondary consumers
(D) decomposers
Answer the following question.
Write any two limitations of ecological pyramids.
Give an example of an ecosystem that shows an inverted pyramid of numbers.
Which ecosystem has the maximum biomass?
Name any two organisms which can occupy more than one trophic level in an ecosystem.
Write a short note on pyramid of numbers and pyramid of biomass.
(a) Given below is a pyramid of biomass in an ecosystem where each bar represents the standing crop available in the trophic level. With the help of an example explain the conditions where this kind of pyramid is possible in nature.
(b) Will the pyramid of energy be also of the same shape in this situation? Give a reason for your response.
A graphic representation of the biomass relationship between the producer and consumer in an ecosystem is called ______.
Describe pyramid of energy with the help of diagram.
