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MCQ (Single Correct Answer)

NEET 2023 Manipur
Plants offer rewards to animals in the form of pollen and nectar and the animals facilitate the pollination process. This is an example of :
NEET 2023 Manipur
If there are 250 snails in a pond, and within a year their number increases to 2500 by reproduction. What should be their birth rate per snail per y...
NEET 2023
Given below are two statements: Statement I : Gause’s ‘Competitive Exclusion Principle’ states that two closely related species competing for the same...
NEET 2023
Match List I with List II. .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-famil...
NEET 2023
Match List I with List II. .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-famil...
NEET 2022 Phase 1
Which one of the following statements cannot be connected to Predation?
NEET 2022 Phase 1
While explaining interspecific interaction of population, (+) sign is assigned for beneficial interaction, ($$-$$) sign is assigned for detrimental in...
NEET 2022 Phase 1
If '8' Drosophila in a laboratory population of '80' died during a week, the death rate in the population is ___________ individuals per Drosophila pe...
NEET 2021
Inspite of interspecific competition in nature, which mechanism the competing species might have evolved for their survival?
NEET 2021
Amensalism can be represented as :
NEET 2021
In the exponential growth equation Nt = N0ert, e represents
NEET 2020 Phase 1
The process of growth is maximum during
NEET 2020 Phase 1
Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their
NEET 2020 Phase 1
Which of the following is not an attribute of a population?
NEET 2019
The Earth summit held in Rio de Janeiro in 1992 was called :
NEET 2019
Match Column-I with Column –II. .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-style:solid;border-width:0px;font-family:Arial, sans-...
NEET 2018
Which one of the following population interactions is widely used in medical science for the production of antibiotics?
NEET 2018
Niche is
NEET 2018
Natality refers to
NEET 2018
Pneumatophores occur in
NEET 2018
Which one of the following plants shows a very close relationship with a species of moth, where none of the two can complete its life cycle without th...
NEET 2018
In a growing population of a country,
NEET 2017
Asymptote in a logistic growth curve is obtained when :
NEET 2017
Mycorrhizae are the example of :
NEET 2017
Plants which produce characteristic pneumatophores and show vivipary belong to :
NEET 2017
Presence of plants arranged into well defined vertical layers depending on their height can be seen best in :
NEET 2016 Phase 2
If '+' sign is assigned to beneficial interaction, '–' sign to detrimental and '0' sign to neutral interaction, then the population interaction repres...
NEET 2016 Phase 2
Which of the following is correct for r-selected species ?
NEET 2016 Phase 2
The principle of competitive exclusion was stated by
NEET 2016 Phase 1
Gause's principle of competitive exclusion states that -
NEET 2016 Phase 1
It is much easier for a small animals to run uphill than for a large animal, because -
NEET 2016 Phase 1
When does the growth rate of a population following the logistic model equal zero? The logistic model is given as dN/dt = rN(1-N/K)
AIPMT 2015
In which of the following interactions both partners are adversely affected?
AIPMT 2015
An association of individuals of different species living in the same habitat and having functional interactions is -
AIPMT 2015 Cancelled Paper
The following graph depicts changes in two populations (A and B) of herbivores in a grassy field. A possible reason for these changes is that: ...
AIPMT 2014
Just as a person moving from Delhi to Shimla to escape the heat for the duration of hot summer, thousands of migratory birds from Siberia and other ex...
NEET 2013 (Karnataka)
The age pyramid with broad base indicates :
NEET 2013 (Karnataka)
Which one of the following is not a parasitic adaptation ?
NEET 2013 (Karnataka)
Benthic organisms are affected most by :
NEET 2013
A sedentary sea anemone gets attached to the shell lining of hermit crab. The association is :
NEET 2013
Besides paddy fields, cyanobacteria are also found inside vegetative part of :
NEET 2013
A biologist studied the population of rats in a barn, He found that the average natality was 250, average mortality 240, immigration 20 and emigration...
AIPMT 2012 Mains
Cuscuta is an example of :
AIPMT 2011 Mains
The logistic population growth is expressed by the equation :
AIPMT 2011 Prelims
What type of human population is represented by the following age pyramid ? ...
AIPMT 2011 Prelims
Large Woody Vines are more commonly found in
AIPMT 2011 Prelims
Which one of the following is categorised as a parasite in true sense ?
AIPMT 2011 Prelims
Consider the following four conditions (a – d) and select the correct pair of them as adaptation to environment in desert lizards. The conditions : (...
AIPMT 2010 Mains
Which one of the following is most appropriately defined ?
AIPMT 2010 Prelims
The figure given below is a diagrammatic representation of response of organisms to abiotic factors. What do a, b and c represent respectively – ...
AIPMT 2010 Prelims
Which one of the following is one of the characteristics of a biological community?
AIPMT 2009
A country with a high rate of population growth took measures to reduce it. The figure below shows age-sex pyramids of populations A and B twenty year...
AIPMT 2009
Reduction in vascular tissue, mechanical tissue and cuticle is characteristic of :
AIPMT 2008
Consider the following four statements (1-4) about certain desert animals such as kangaroo-rat. (i) They have dark colour and high rate of reproducti...
AIPMT 2008
Quercus species are the dominant component in:
AIPMT 2007
Geometric representation of age structure is a characteristic of :-
AIPMT 2007
The population of an insect species shows an explosive increase in numbers during rainy season followed by its disappearance at the end of the season....
AIPMT 2007
If the mean and the median pertaining to a certain character of a population are of the same value, the following is most likely to occur:-
AIPMT 2007
A high density of elephant population in an area can result in :-
AIPMT 2006
Niche overlap indicates-
AIPMT 2005
At which latitude, heat gain through insolation approximately equals heat loss through terrestrial radiation -
AIPMT 2005
More than 70% of world's fresh water is contained in –
AIPMT 2005
Which one of the following pairs in mismatched ?
AIPMT 2005
Animals have the innate ability to escape from predation. Examples for the same are given below. Select the incorrect example
AIPMT 2004
Certain characteristic demographic features of developing countries are -
AIPMT 2004
What is a keystone species ?
AIPMT 2004
The maximum growth rate occurs in :-
AIPMT 2004
In which of the following pairs is the specific characteristic of a soil not correctly matched ?
AIPMT 2004
In which one of the following habitats does the diurnal temperature of soil surface vary most ?
AIPMT 2003
Mycorrhiza is an example of :-
AIPMT 2002
What is true for individuals of same species ?
AIPMT 2002
Which type of association is found in between entomophilous flower and pollinating agent ?
AIPMT 2002
Two different species can not live for long duration in the same niche or habitat. This law is : -
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