Organisms and Populations: Online MCQ Test – 1 8

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NEET questions (MCQS) on Organisms and Population | Solve important NEET MCQs on Organisms and Population and get your instant score and solutions | Test No. 01

Organisms and Environment: Quiz - 1

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Question 1
Community is
A
Species structure and diversity index of an area
B
Biomass
C
Autotrophic and heterotrophic components
D
All of these
Question 2
Which factor of ecosystem includes plants, animals and microorganisms?
A
Biotic factors
B
Direct factors
C
Indirect factors
D
Abiotic factors
Question 3
Which one of the following is categorized as a parasite in true sense?
A
The cuckoo lays its egg in crow's nest
B
The female Anopheles bites and sucks blood from humans
C
Human foetus developing inside the uterus draws nourishment from the mother
D
Head louse living on the human scalp as well as laying eggs on human hair
Question 4
A population with equal number of births and deaths will show
A
Acceleration phase of growth
B
Plateau phase
C
Exponential growth phase
D
Initial phase of growth
Question 5
A terrestrial animal must be able to
A
Excrete large amounts of salts in urine
B
Actively pump salts out through the skin
C
Conserve water
D
Excrete large amount of water in urine
Question 6
Adaptation to low temperature and freezing in animals occurs due to the production of
A
Chaperonins
B
Proline
C
Antifreeze
D
Alanine
Question 7
An association of individuals of different species living in the same habitat and having functional interactions is
A
Biotic community
B
Ecologic niche
C
Population
D
Ecosystem
Question 8
Animals that have adapted themselves to live in deserts are known as
A
Fossorial
B
Xerocoles
C
Arboreal
D
Terrestrial
Question 9
Association between sea Anemone and Hermit crab in gastropod shell is that of
A
Parasitism
B
Commensalism
C
Symbiosis
D
Amensalism
Question 10
Biotic potential is increase in population under
A
Optimum conditions
B
Climatic conditions
C
Natural conditions
D
Given conditions
Question 11
CAM helps the plants in
A
Reproduction
B
Conserving water
C
Secondary growth
D
Disease resistance
Question 12
The abundance of a species population within its habitat is called
A
Relative density
B
Regional density
C
Absolute density
D
Niche density
Question 13
Which of the followings is not the characteristic of the anatomy of xerophytes?
A
Well developed conducting tissue
B
Spongy parenchyma
C
Thick cuticle
D
Well developed mechanical tissue
Question 14
Competition is most severe between two
A
Distantly related species growing in the same habitat
B
Closely related species growing in the same habitat
C
Closely related species growing in different niches
D
Distantly related species growing in different niches.
Question 15
When one animal copies the appearance, actions, or sounds of another animal to avoid predators, it is called
A
Mimicry
B
Commensalism
C
Competition
D
Symbiosis
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8 thoughts on “Organisms and Populations: Online MCQ Test – 1”

  • Reply ↓
    thilak

    hello muskaan. sea anemone and hermit crab is an eg. for protocooperation [non-obligatory,as u said]

  • Reply ↓
    Muskaan Bhardwaj

    Relation between sea anemone and hermit crab is non obligatory but is example of symbiosis,not of commensalism.

  • Reply ↓
    rajat garg

    in question 3,
    option a is also correct
    as it comes under parasitism

    • Reply ↓
      Mahesh Sharma

      Parasite in true sense and brood parasitism are different things. True parasite are generally smaller than host, have short life span than host, reproduce on /in them. Eg. Tapeworm, lice ,roundworms,etc.

    • Reply ↓
      brijendra

      Because foetus get nurishment from mother w/o any harm to mother so it is an example of commenslism

      • Reply ↓
        shudhanshu

        No….foetus retrieve its nutrition from the mother through umbilical cord….so it could not be an example of commensalism……..also it do no harm to the mother as she increase her nutritional value of diet to meet her usual requirement along with her foetus…..also it brings happiness in the family….so it could not be an example of parasitism…..thats it..