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Questions >> JEEMAIN and NEET >> Biology >> Ecology and Environment

The term ' Biocoenosis ' was proposed by

asked Mar 31, 2014 by sreemathi.v

2 answers

MAB stands for

asked Mar 31, 2014 by sreemathi.v

1 answer

A water body has high BOD indicating that

asked Mar 31, 2014 by sreemathi.v

1 answer

Endangered plant species get conserved through

asked Mar 31, 2014 by sreemathi.v

1 answer

National committee of environmental planning & coordination was set-up by Indian ministry in the year

asked Mar 31, 2014 by sreemathi.v

1 answer

Preserving germplasm in frozen state is

asked Mar 28, 2014 by sreemathi.v

1 answer

$\begin{array}{1 1}(A)\;\text{Batesian mimicry is a form of mimicry in which an edible/palatable species presents itself as inedible/unpalatable}\\(R)\;\text{Batesian mimicry is a form of protective mimicry}\end{array}$

asked Mar 28, 2014 by sreemathi.v

1 answer

$\begin{array}{1 1}(A)\;\text{Succession and evolution would have been parallel processes for primitive earth}\\(R)\;\text{Succession is predictable whereas evolution is a stochastic process}\end{array}$

asked Mar 28, 2014 by sreemathi.v

1 answer

$\begin{array}{1 1}(A)\;\text{For a banyan tree ecosystem,the population density should be measured by its biomass}\\(R)\;\text{Number undermines the huge role of banyan tree in the ecosystem}\end{array}$

asked Mar 28, 2014 by sreemathi.v

1 answer

$\begin{array}{1 1}(A)\;\text{Lion is a keystone species of grassland}\\(R)\;\text{Due to their prudent nature,predators maintain the prey population in control and hence maintain species balance of the ecosystem}\end{array}$

asked Mar 28, 2014 by sreemathi.v

1 answer

$\begin{array}{1 1}(A)\;\text{Temperature is the most ecologically relevant factor}\\(R)\;\text{It affects the kinetics of enzymes & through it the BMR,activity and other physiological function of organism}\end{array}$

asked Mar 28, 2014 by sreemathi.v

1 answer

$\begin{array}{1 1}(A)\;\text{Trophical rain-forests are disappearing fast from developing countries such as India}\\(R)\;\text{No value is attached to these forests as they are poor in biodiversity}\end{array}$

asked Mar 28, 2014 by sreemathi.v

1 answer

$\begin{array}{1 1}(A)\;GPP > NPP\\(R)\;GPP-R = NPP\end{array}$

asked Mar 28, 2014 by sreemathi.v

1 answer

$\begin{array}{1 1}(A)\;\text{No population of any species in nature has its disposal to unlimited resources to permit exponential growth}\\(R)\;\text{In nature,a given habitat has enough resources to support a maximum possible number beyond which no further growth is possible}\end{array}$

asked Mar 28, 2014 by sreemathi.v

1 answer

$\begin{array}{1 1}(A)\;\text{Pathogens are parasites}\\(R)\;\text{They may cause harm by living in or on them}\end{array}$

asked Mar 28, 2014 by sreemathi.v

1 answer

$\begin{array}{1 1}(A)\;\text{Energy flow in ecosystem is bidirectional}\\(R)\;\text{Energy goes on increasing with each and every trophic level}\end{array}$

asked Mar 28, 2014 by sreemathi.v

1 answer

$\begin{array}{1 1}(A)\;\text{Small animals are rarely found in desert}\\(R)\;\text{Generally surface are of desert animals are less in comparision to their volume}\end{array}$

asked Mar 28, 2014 by sreemathi.v

1 answer

Which of the following species is not invasive:-

asked Mar 28, 2014 by sreemathi.v

1 answer

2 main structural components of ecosystem

asked Mar 28, 2014 by sreemathi.v

1 answer

Soil formation accounts for what percentage of ecosystem services:-

asked Mar 28, 2014 by sreemathi.v

1 answer

Which of the following is present in carbon cycle but absent in phosphorous cycle:-

asked Mar 28, 2014 by sreemathi.v

1 answer

How much of sun light energy is converted into NPP:-

asked Mar 28, 2014 by sreemathi.v

1 answer

Number of trophic level in GFC are restricted due to :-

asked Mar 28, 2014 by sreemathi.v

1 answer

Major conduit of energy flow in aquatic ecosystem is :-

asked Mar 28, 2014 by sreemathi.v

1 answer

Which of the following is incorrect about detritus food chain

asked Mar 28, 2014 by sreemathi.v

1 answer

Which is wrong about humus:-

asked Mar 28, 2014 by sreemathi.v

1 answer

Human liver fluke is :-

asked Mar 28, 2014 by sreemathi.v

1 answer

Who showed the phenomenon of resource partitioning :-

asked Mar 28, 2014 by sreemathi.v

1 answer

Which of the following is least-affected by competition:-

asked Mar 28, 2014 by sreemathi.v

1 answer

Which of the following is incorrect about predation:-

asked Mar 28, 2014 by sreemathi.v

1 answer

For a newly colourised habitat,which factors affects the population density the most :

asked Mar 28, 2014 by sreemathi.v

1 answer

Natural selection operates at the level of :-

asked Mar 28, 2014 by sreemathi.v

1 answer

Relationship exhibited by a cuckoo laying its eggs in crow's nest is :-

asked Mar 28, 2014 by sreemathi.v

1 answer

Copepods are ectoparasites on :-

asked Mar 28, 2014 by sreemathi.v

1 answer

Exponential growth occurs when there is :-

asked Mar 28, 2014 by sreemathi.v

1 answer

Which group of vertebrates comprises the highest number of endangered species:-

asked Mar 28, 2014 by sreemathi.v

1 answer

Red data book provides data on :-

asked Mar 28, 2014 by sreemathi.v

1 answer

Which of the following is best indicator of $SO_2$ pollution:-

asked Mar 28, 2014 by sreemathi.v

1 answer

Hotspots are regions of high

asked Mar 28, 2014 by sreemathi.v

1 answer

All are in-situ efforts except :-

asked Mar 28, 2014 by sreemathi.v

1 answer

The most important reason for decrease in biodiversity is :-

asked Mar 28, 2014 by sreemathi.v

1 answer

Biodiversity :-

asked Mar 28, 2014 by sreemathi.v

1 answer

Approximately 50% of total would species are present on:-

asked Mar 28, 2014 by sreemathi.v

1 answer

Which of the following region has maximum diversity?

asked Mar 28, 2014 by sreemathi.v

2 answers

IUCN is also called as

asked Mar 28, 2014 by sreemathi.v

1 answer

Sum total of populations of the same kind of organisms constitute :-

asked Mar 28, 2014 by sreemathi.v

1 answer

Pyramid of numbers deals with the number of :-

asked Mar 28, 2014 by sreemathi.v

1 answer

Carrying capacity of a population is determined by its:-

asked Mar 28, 2014 by sreemathi.v

1 answer

Poineer in xerarch succession is :-

asked Mar 28, 2014 by sreemathi.v

1 answer

All the statements are correct regarding succession except :-

asked Mar 27, 2014 by sreemathi.v

1 answer

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