हिंदी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

The number of trophic levels in an ecosystem are limited. Comment. - Biology

Advertisements
Advertisements

प्रश्न

The number of trophic levels in an ecosystem are limited. Comment.

टिप्पणी लिखिए
Advertisements

उत्तर

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.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 14: Ecosystem - SHORT ANSWER [पृष्ठ १०३]

APPEARS IN

एनसीईआरटी एक्झांप्लर Biology [English] Class 12
अध्याय 14 Ecosystem
SHORT ANSWER | Q 2. | पृष्ठ १०३

वीडियो ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्न

Give diagrammatic representation of pyramid of numbers.


“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.


Why the pyramid of energy is always upright? Explain.


In an ecosystem dominated by trees, the pyramid (of numbers) is ______ type.


Describe with examples of pyramids of number and biomass.


In a food chain, the herbivores are represented by

(A) producers

(B) primary consumers

(C) secondary consumers

(D) decomposers


Answer the following question.
What is an ecological pyramid? Compare the pyramids of energy, biomass, and numbers.


Explain with the help of labelled diagrams, the difference between an upright pyramid of biomass and an inverted pyramid of biomass.


Give an example of an ecosystem that shows an inverted pyramid of biomass.


Which one of the following is not used for construction of ecological pyramids?


Pyramid of biomass in terrestrial ecosystem shows sharp decline in


Pyramid of numbers is ______.


What does the base tier of the ecological pyramid represent?


Organisms at a higher trophic level have less energy available. Comment.


(a) Draw a pyramid of numbers where a large number of insects are feeding on the leaves of a tree. What is the shape of this pyramid?

(b) Will the pyramid of energy be also of the same shape in this situation? Give a reason for your response.


The biomass of a standing crop of phytoplankton is 4 kg/m2, which supports a large standing crop of zooplankton having a biomass of 11 kg/m2. This is consumed by small fishes having a biomass of 25 kg/m2, which are then consumed by large fishes with a biomass of 37 kg/m2.

Draw an ecological pyramid indicating the biomass at each stage and also name the trophic levels. Mention whether it is an upright or inverted pyramid.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×