Recent questions tagged exemplar

Define gene pool.

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What does 'Red' indicate in the IUCN red list (2004)? 

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“The energy flow in an ecosystem follows the second law of thermodynamics”. Explain.

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Which of the following ecosystems will be more productive in terms of primary productivity? Justify

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Justify the following statements in terms of ecosystem dynamics. “Nature tends to increase the gro

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The rate of decomposition of detritus is affected by the abiotic factors like availability of oxygen

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What are the three types of ecological pyramids. What information is conveyed by each pyramid with r

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<div>What will happen to an ecosystem if:</div><div><br></div><div>a. All producers are removed.</di

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A farmer harvests his crop and expresses his harvest in three different ways.<br><br><div>a. I have

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What are the shortcomings of ecological pyramids in the study of the ecosystem?

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Apart from plants and animals, microbes form a permanent biotic component of an ecosystem. While pla

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Flow of energy through various trophic levels in an ecosystem is uni directional and non cyclic. Exp

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Is aquarium a complete ecosystem?

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

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Primary productivity varies from ecosystem to ecosystem. Explain.

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Poaching of tiger is a burning issue in today's world. What implication would this activity have on

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Human activities interfere with carbon cycle. List any two such activities. 

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What would be the reason for the faster rate of decomposition in the tropics? 

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Climax stage is achieved quickly in secondary succession as compared to primary succession. Why?

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Arrange the following as observed in vertical stratification of a forest : Grass, Shrubby plants, te

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What is common to earthworm, mushroom, soil mites and dung beetle in an ecosystem? 

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Define self sustainability. 

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Give any two examples of xerarch succession. 

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Why the rate of assimilation of energy at the herbivore level is called secondary productivity?&nbsp

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Why are oceans least productive? 

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Is the common edible mushroom an autotroph or a heterotroph? 

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What is the ultimate source of energy for the ecosystem?

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Among bryophytes, lichens and ferns which one is a pioneer species in a xeric succession?

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

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Justify the pitcher plant as a producer. 

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Name an omnivore which occurs in both grazing food chain and the decomposer food chain. 

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Under what conditions would a articular stage in the process of succession revert back to an earlier

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What does the base tier of the ecological pyramid represent? 

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Name an organism found as secondary carnivore in an aquatic ecosystem. 

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Give one example for each of the following:

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While living in and on the host species, the animal parasite has evolved certain adaptations. Descri

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Discuss the various types of positive interactions between species.

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Does light factor affect the distribution of organisms? Write a brief note giving suitable examples

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<div>Do you agree that regional and local variations exist within each biome?</div><div><br></div><d

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Give one example for each of the following types.

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Define zero population growth rate?

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In a pond, we see plants that are free floating ;rooted-submerged: rooted emergent; rooted with floa

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In a sea shore, the benthic animals live in Sandy, muddy or rocky substrata and accordingly develope

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Define heliophytes and sciophytes. Name a pant from your locality that is either a heliophyte or a s

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Why are coral reef not found in the regions from west Bengal to Andhra Pradesh but are found in Tami

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In an aquarium two herbivorous species of fishes are living together feeding on phytoplanktons. As p

asked Jul 10, 2017 by pady_1

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Lianas are vascular plants rooted in the ground and maintain erectness of their stem by making use o

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The density of a population in a habitat per unit area is measured in different units. Write the uni

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Categorise the following plants into hydrophytes, halophytes, mesophytes and xerophytes. Give reason

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Why do submerged plants receive weaker illumination than exposed floating plants in a lake?

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