Recent questions in Ecology and Environment

Succession initiated an large sand deposits of deserts is called:-

asked Mar 27, 2014 by sreemathi.v

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Biotic potential is counteracted by :-

asked Mar 27, 2014 by sreemathi.v

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species that occur in different geographical regions seperated by special barriers are :-

asked Mar 27, 2014 by sreemathi.v

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Trophic levels are formed by :-

asked Mar 27, 2014 by sreemathi.v

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Source of energy in an ecosystem is :-

asked Mar 27, 2014 by sreemathi.v

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An eco system must have a continuous external source of

asked Mar 27, 2014 by sreemathi.v

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Ecotype is a type of species in which environmentally induced variations are :-

asked Mar 27, 2014 by sreemathi.v

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Autoecology deals with :-

asked Mar 27, 2014 by sreemathi.v

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Ecology deals with the study of

asked Mar 27, 2014 by sreemathi.v

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Which is an effect of global warming?

asked Mar 27, 2014 by sreemathi.v

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The functioning of an ecosystem is governed by :-

asked Mar 27, 2014 by sreemathi.v

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Which of the following is most productive?

asked Mar 27, 2014 by sreemathi.v

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Which type of pyramid shows biotic potential of ecosystem?

asked Mar 27, 2014 by sreemathi.v

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In which condition nutrient retention (Bio mass) is higher in case of young growing forest?

asked Mar 27, 2014 by sreemathi.v

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Which of the following is not correct?

asked Mar 27, 2014 by sreemathi.v

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Which of the following expected to have the highest value (in gm/m$^2$ yr) in a grassland?

asked Mar 27, 2014 by sreemathi.v

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Which is correct for threatened (T) species?

asked Mar 27, 2014 by sreemathi.v

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Ozone is gaseous " secondary " air pollutant,because:-

asked Mar 27, 2014 by sreemathi.v

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The share of CFC in green house effect is :-

asked Mar 27, 2014 by sreemathi.v

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The aim of earth summit held at rio- de- janeiro in 1992:-

asked Mar 27, 2014 by sreemathi.v

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Which is not a positive soil pollution:-

asked Mar 27, 2014 by sreemathi.v

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Which is not a part of ex-situ conservation :-

asked Mar 27, 2014 by sreemathi.v

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The branch of botany dealing with the distribution of plants or earth's surface is turned:-

asked Mar 27, 2014 by sreemathi.v

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In 1987,27 industrialised countries signed the montreal protocol,an international agreement :-

asked Mar 27, 2014 by sreemathi.v

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Which one of the following is most stable ecosystem?

asked Mar 27, 2014 by sreemathi.v

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A food rule:-

asked Mar 27, 2014 by sreemathi.v

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What percentage of sun's energy sustains the entire living world?

asked Mar 27, 2014 by sreemathi.v

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Success of mammals is largely due to their

asked Mar 27, 2014 by sreemathi.v

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Following curve represents 3 entities in a following river in which sludge was added.Curve X & Z represent (respectively)

asked Mar 24, 2014 by sreemathi.v

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Which is incorrect about an ecotone?

asked Mar 24, 2014 by sreemathi.v

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Consider an ecosystem consisting of a prey and a predator.If H is the density of prey,p is the density of predator r in the intrinsic rate of prey population increases and q is the predation rate coefficient.Which of the following correctly represents change in prey population density with time?

asked Mar 24, 2014 by sreemathi.v

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Under optional environmental conditions,which of the following would have the total highest biomass per year?

asked Mar 24, 2014 by sreemathi.v

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Which of the following graphs correctly represents the prey-predator relationship

asked Mar 24, 2014 by sreemathi.v

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Species B & C are mutually related.Species A is obligate parasite on B.Species A is benefitted by presence of C.Following regions contain the ideal climate and conditions for survival of these species.Species will be found in which areas:-

asked Mar 24, 2014 by sreemathi.v

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Which of the following is correct about succession? cause of environment change during succession:-

asked Mar 24, 2014 by sreemathi.v

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Choose the correct sequence of stages of growth curve in bacteria

asked Mar 24, 2014 by sreemathi.v

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What is the replacement level of India?

asked Mar 24, 2014 by sreemathi.v

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An ecosystem which can be easily damaged but can recorrect after sometime it damaging effect stops will be having

asked Mar 24, 2014 by sreemathi.v

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There is no limitation in detritus food chain for number of trophic level because

asked Mar 24, 2014 by sreemathi.v

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Human population growth curve is a

asked Mar 24, 2014 by sreemathi.v

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Assertion & Reason types:(A) For a threatened species which needs urgent-measures to present it from extinction,insitu conservation is more desirable approach.(R)Insitu conservation protects organism in their own environment

asked Mar 24, 2014 by sreemathi.v

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Assertion & Reason types:(A) Prickly pear cactus introduced in Australia in 1920s became inveasive.(R) The physical environment was optional for its growth and reproduction.

asked Mar 24, 2014 by sreemathi.v

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Assertion & Reason types:(A)Chemical means of farming are being replaced by organic means.(R) Organic farming is more productive.

asked Mar 24, 2014 by sreemathi.v

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In the following species-area log curve

asked Mar 24, 2014 by sreemathi.v

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Equation of logistic curve is

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In an ecosystem which one shows one way passage

asked Mar 24, 2014 by sreemathi.v

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In tropical rain forest,the soil is characterised by :-

asked Mar 24, 2014 by sreemathi.v

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Cuscuta's made of nutrition

asked Mar 24, 2014 by sreemathi.v

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Due to exinction of pollinator bee,a plant with obligate mutualism with this bee extinct.This can be placed in which cause of extinction?

asked Mar 24, 2014 by sreemathi.v

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