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Organisms And Population – Biology GK MCQ

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Organisms And Population

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Organisms And Population – Biology GK MCQ (जीव और जनसंख्या)

Delve into the world of “Organisms and Population” with our comprehensive collection of multiple-choice questions (MCQs) sourced from previous year papers of diverse competitive exams, including UPSC IAS and others. Test your knowledge of ecological relationships, population dynamics, and adaptation with our expertly curated MCQs. Prepare effectively for various exams with this valuable resource now!

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Our comprehensive collection covers a wide spectrum of topics, including ecological niches, population growth, community interactions, and species adaptations. Whether you’re exploring the dynamics of ecosystems or understanding the mechanisms of evolution, these questions are designed to challenge your knowledge and analytical skills.

As an aspirant preparing for UPSC IAS or any other competitive exam, this resource will prove invaluable in honing your problem-solving abilities and acquainting yourself with the types of questions frequently asked in these assessments.

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Extensive coverage of relevant topics from previous year papers.
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Ideal for self-assessment and tracking progress.
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Unlock the secrets of ecological relationships and population dynamics with this comprehensive resource. Test your knowledge on Organisms and Population to thrive with confidence in your pursuit of exam success.

Organisms And Population – Biology GK MCQ – Previous Year Questions

Question:

Find the wrongly matching:

ACattle egret and cattle – Commensalism.
B Penicillium and bacteria – Ammensalism.
CFig tree and wasp – Mutualism.
D Monarch butterfly and bird – Competition.

Question:

Birth rate under ideal conditions is known as

A mortality
Bnatality
Cboth a and b
D none of these

Question:

Which of the following statements is false about age pyramids?

AThe shape of the pyramids reflects the growth status of the population.
B For human population, the age pyramids generally show age distribution of males and females in a combined diagram.
C In declining population, the number of pre-reproductive individuals is high.
D) If in an age pyramid, post reproductive individuals are minimum, it will be expanding population.

Question:

Assertion: Prolonged Intraspecific competition causes an increase in the size of the niche of a population. Reason: In such a population, use of new type of resources will increase through generations.

A Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
B Both Assertion and Reason are true but Reason is NOT the correct explanation of Assertion.
CAssertion is true but Reason is false.
DBoth Assertion and Reason are false.

Question:

If global warming continues, how would the distributional range of some species be affected?

AThere will be poleward shift
BThere will be equatorial shift
C No change expected for any species
D Shift to marine water from land

Question:

Producers → Decomposers → ’X’, then what will be ‘X’ ?

A Nostoc
B Fungi
CBoth of these
D None of these

Question:

An association between two or more species in which both are benefited is known as

A commensalism
Bsymbiosis
Cmutualism
Dcooperation

Question:

In Galapagos Islands, Abingdon tortoises became extinct within a decade after goats were introduced on the island, because:

A Resources are limited.
B Intraspecific competition.
C Greater browsing efficiency of goats.
D Resources are limited.

Question:

Assertion: Plant animal interactions do not generally involve co – evolution of the mutualistic organisms. Reason: Evolution of the plants and animals never go side by side.

A Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
B Both Assertion and Reason are true but Reason is NOT the correct explanation of Assertion.
C) Assertion is true but Reason is false.
D Both Assertion and Reason are false.

Question:

Find out the correct ones: (i) Mammals of colder climate generally have shorter ears and limbs to minimise heat loss. (ii) All organisms have behavioural adaptations that allow them to respond quickly to a stressful condition. (iii) Some organisms possess behavioural adaptations which allow them migrating temporarily to a less stressful situation. (iv) Invertebrates and fishes live at greater depths in the ocean have biochemical adaptations to cope with high pressure.

A(i) and (ii).
B (ii) and (iii).
C(i), (iii) and (iv).
D(i), (ii) and (iv).

Question:

The father of ecology in India is:

A) Dudgeon.
BAgharkar.
CW.H. Pearsal.
DRamdeo Misra.

Question:

What true for the following statements ? Statement X : During evolution many species, by continous development of their internal environment, made their physiologycal processes more efficient. Statement Y : Organisms show adaptations in order to survive in the enviornment

AX=True; Y=True
BX=True; Y= False
CX=False; Y= True
D X=False; Y= False

Question:

Which of the following algae is likely to be found in the deepest waters?

AGreen
BBrown
CRed
D All are found at equal depths

Question:

When certain exotic species are introduced into a geographical area they become invasive mainly because

A The invaded land has unlimited resources for the introduced species
BThe invaded land does not have its natural predator
C The population of the introduced species in the invaded land is very low
D Introduced species do not face any competition in the introduced land

Question:

Gause’s principle of competitive exclusion is, essentially

A The more abundant species will exclude the less abundant species through competition
B Competition for the same resources excludes species having different life styles
C No two species can occupy the same niche indefinitely when resources are limited
DLarger organisms exclude smaller ones through competition as in the case of large trees controlling underbrush

Question:

In general, which of the following is not an adaptation seen in parasites in accordance with their life style?

A Loss of unnecessary sense organs
B Presence of adhesive organs
C Low reproductive capacity
DLoss of digestive system

Question:

Consider the following four condition (I-IV) and select the correct pair of them as adaptation to environment in desert lizards The conditions I. Burrowing in soil to escape high temperature II. Losing heat rapidly from the body during high temperature III. Bask in sun when temperature is low Iv. Insulating body due to thick fatty dermis

A (I) and (III)
B (II) and (IV)
C (I) and (II)
D (III) and (IV)

Question:

Praying mentis is a good example of Explanation is provided, please click on

Amullerian mimicry
Bwarning colouration
C social insects
D camouflage

Question:

Which of the following statements is incorrect?

ALichen, an association of fungus and algae is an example of mutualism
B Those epiphytes which use other plants for support only and not for water or food supply and are examples of commensalism
C Sea-anemone on hermit-crab is an example of protocooperation
D) Mutualism, protocooperation, commensalism cannot be included under symbiosis

Question:

In an area, a population with large size individuals having long life span, more parental care and slow development was present. The type of population growth curve will be