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
Question 1 |
Community is
Species structure and diversity index of an area | |
Biomass | |
Autotrophic and heterotrophic components | |
All of these |
Question 2 |
Which factor of ecosystem includes plants, animals and microorganisms?
Biotic factors | |
Direct factors | |
Indirect factors | |
Abiotic factors |
Question 3 |
Which one of the following is categorized as a parasite in true sense?
The cuckoo lays its egg in crow's nest | |
The female Anopheles bites and sucks blood from humans | |
Human foetus developing inside the uterus draws nourishment from the mother | |
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
Acceleration phase of growth | |
Plateau phase | |
Exponential growth phase | |
Initial phase of growth |
Question 5 |
A terrestrial animal must be able to
Excrete large amounts of salts in urine | |
Actively pump salts out through the skin | |
Conserve water | |
Excrete large amount of water in urine |
Question 6 |
Adaptation to low temperature and freezing in animals occurs due to the production of
Chaperonins | |
Proline | |
Antifreeze | |
Alanine |
Question 7 |
An association of individuals of different species living in the same habitat and having functional interactions is
Biotic community | |
Ecologic niche | |
Population | |
Ecosystem |
Question 8 |
Animals that have adapted themselves to live in deserts are known as
Fossorial | |
Xerocoles | |
Arboreal | |
Terrestrial |
Question 9 |
Association between sea Anemone and Hermit crab in gastropod shell is that of
Parasitism | |
Commensalism | |
Symbiosis | |
Amensalism |
Question 10 |
Biotic potential is increase in population under
Optimum conditions | |
Climatic conditions | |
Natural conditions | |
Given conditions |
Question 11 |
CAM helps the plants in
Reproduction | |
Conserving water | |
Secondary growth | |
Disease resistance |
Question 12 |
The abundance of a species population within its habitat is called
Relative density | |
Regional density | |
Absolute density | |
Niche density |
Question 13 |
Which of the followings is not the characteristic of the anatomy of xerophytes?
Well developed conducting tissue | |
Spongy parenchyma | |
Thick cuticle | |
Well developed mechanical tissue |
Question 14 |
Competition is most severe between two
Distantly related species growing in the same habitat | |
Closely related species growing in the same habitat | |
Closely related species growing in different niches | |
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
Mimicry | |
Commensalism | |
Competition | |
Symbiosis |
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hello muskaan. sea anemone and hermit crab is an eg. for protocooperation [non-obligatory,as u said]
Relation between sea anemone and hermit crab is non obligatory but is example of symbiosis,not of commensalism.
in question 3,
option a is also correct
as it comes under parasitism
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.
In quest no. 3 why ‘c’ is not answer
Because foetus get nurishment from mother w/o any harm to mother so it is an example of commenslism
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..
good