Organism and Population NEET MCQ. We covered all the Organism and Population NEET MCQ in this post for free so that you can practice well for the exam.
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MCQ on Organism and Population NEET for Students
Select the INCORRECT match with respect to the outcome of the interactions.
(A) Competition – Both species suffer
(B) Commensalism One is harmed, other is affected
(C) Mutualism Both species benefited
(D) Parasitism – One species is benefitted and the other is affected
Option b – Commensalism One is harmed, other is affected
Natality refers to
(A) the number of births during a given period in the population.
(B) number of deaths during a given period in the population.
(C) a number of individuals of the population that left the habitat from elsewhere.
(D) a number of individuals of the same species that enter the habitat from elsewhere.
Option a – the number of births during a given period in the population.
Which of the following represents the highest level of biological organization?
(A) Tissue
(B) Populations
(C) Biome
(D) Community
Option c – Biome
Complete the analogy with respect to population interactions. Barnacles : Whale:: Clownfish: ……….
(A) Abingdon tortoise
(B) Cuscuta
(C) Copepods
(D) Sea anemone
Option d – Sea anemone
Which amongst the following is NOT a parasitic adaptation?
(A) Presence of adhesive suckers
(B) Well-developed digestive system
(C) High reproductive capacity
(D) Loss of unnecessary sense organs
Option b – Well-developed digestive system
Identify the CORRECT sequence of phases occurring in logistic growth.
(A) Lag, acceleration, deceleration, asymptote
(B) Acceleration, deceleration, asymptote, lag
(C) Lag, asymptote, log, deceleration
(D) Acceleration, lag, asymptote, deceleration
Option a – Lag, acceleration, deceleration, asymptote
Gause’s ‘Competitive Exclusion Principle states that
(A) predators are the conduits for energy transfer
(B) two unrelated species do not compete with each other
(C) two closely related species competing for the same resources cannot co-exist indefinitely.
(D) two species competing for the same resource avoid competition by evolving mechanisms.
Option c – two closely related species competing for the same resources cannot co-exist indefinitely.
Assertion: Desert lizards bask in the sun and absorb heat when their body temperature drops the comfort zone, they move in the shade below when the ambient temperature starts increasing. Reason: Desert lizards possess the physiological ability to deal with the high temperatures of their habitat.
(A) Both assertion and reason are true and the reason is the correct explanation of the assertion.
(B) Both assertion and reason are true and the reason is not the correct explanation of the assertion.
(C) The assertion is true but the reason is false.
(D) Both assertion and reason are false.
Option c – The assertion is true but the reason is false.
Identify the INCORRECT statement.
(A) Endoparasites live inside the host body at different sites.
(B) Lice and humans, ticks, and dogs are examples of ectoparasitism.
(C) In brood parasitism, the parasitic bird lays its eggs in the nest of its host.
(D) Female Anopheles mosquito is a malarial parasite.
Option d – Female Anopheles mosquito is a malarial parasite
This interaction explains brood parasitism :
(A) Suspended development in zooplanktons
(B) Association between fungi and algae in lichen
(C) Koel laying eggs in the nest of a crow
(D) Cuscuta growing on hedge plants
Option c – Koel laying eggs in the nest of a crow
Which of the following correctly describes Niche?
(A) Factors affecting the behavior of an organism in its habitat.
(B) The functional role played by the organism where it lives.
(C) All the physical factors in the organism’s environment.
(D) The physical space where an organism lives.
Option b – The functional role played by the organism where it lives.
…….. is the initial phase of logistic growth.
(A) Lag phase
(B) Acceleration phase
(C) Deceleration phase
(D) Asymptote
Option a – Lag phase
What will happen if natality is balanced by mortality?
(A) There will be a decrease in population growth.
(B) There will be overpopulation.
(C) There will be an increase in population growth.
(D) There will be zero population growth.
Option d – There will be zero population growth.
Assertion: Shrews and hummingbirds are rarely found in the polar regions. Reason: These animals have a larger surface area relative to their volume and tend to lose body heat very fast when it is cold outside.
(A) Both assertion and reason are true and the reason is the correct explanation of assertion.
(B) Both assertion and reason are true but the reason is not the correct explanation of assertion.
(C) The assertion is true but the reason is false
(D) Both assertion and reason are false.
Option b – Both assertion and reason are true and the reason is the correct explanation of assertion.
Organisms that can tolerate a narrow range of salinity are known as
(A) eurythermal
(B) stenohaline
(C) euryhaline
(D) stenothermal
Option b – stenohaline
Which of the following indicates population increase in a given area?
(A) If (B+I) > (D+E)
(B) If (D+E)> (B+E)
(C) If (B+E) > (D+I)
(D) If (D+I)> (B+E)
Option a – If (B+I) > (D+E)
In which type of interaction one species is harmed whereas the other remains unaffected?
(A) Amensalism
(B) Mutualism
(C) Parasitism
(D) Predation
Option a – Amensalism
The age pyramid with a narrow base indicates
(A) a high percentage of post-reproductive individuals
(B) the low percentage of pre-reproductive individuals
(C) an expanding population
(D) stable population
Option b – the low percentage of pre-reproductive individuals
The Mediterranean orchid Ophrys employs sexual deceit to ensure its pollination by
(A) lemurs
(B) amphibians
(C) bees
(D) birds
Option c – bees
The population of fruitflies in a laboratory is 70 and 8 of them died during a week. Calculate the death rate of drosophila.
(A) 10 individuals/fruitfly/week
(B) 0.1 individuals/fruitfly/week
(C) 100 individuals/fruitfly/week
(D) 1.03 individuals/fruitfly/week
Option b – 0.1 individuals/fruitfly/week
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