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

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

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

वीडियो ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्न

“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.


Distinguish between upright and inverted pyramids.


Distinguish between a food chain and a food web.


Describe with examples of pyramids of number and biomass.


'The pyramid of energy is always upright.' Explain


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


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


Pyramid of energy in grassland and pond ecosystem is always ______.


Name any two organisms which can occupy more than one trophic level in an ecosystem.


What are the three types of ecological pyramids? What information is conveyed by each pyramid with regard to structure, function and energy in the ecosystem?


(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) 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.


Draw a diagram of pyramid of energy.


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.


Which ecosystem shows an inverted biomass pyramid?


Which statement explains the inverted pyramid of biomass in oceanic ecosystems?


Which food chains have more available energy?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×