NCERT NEET Ecology Population,NTA NEET sample,Mock tests,exams

Ecology Organism and Population Mock Test-12

Question No:1

Diapause is

[A] Adaptation to terristerial life
[B] Stage of suspended developement seen in unfavourble conditions in many zooplankton species in lakes and ponds
[C] Method of migration from stressful habital to a more hospitable area
[D] It is a type of Symbiosis.



Question No:2

Amensalism is an association between two species where

[A] One species is harmed and other is benefitted
[B] One species is harmed and other is unaffected
[C] One species is benefitted and other is unaffected
[D] Both the species are harmed



Question No:3

Lichens are the associations of

[A] Bacteria and fungus
[B] Algae and bacterium
[C] Fungus and algae
[D] Fungus and virus



Question No:4

Which of the following is a partial root parasite?

[A] Sandal wood
[B] Mistletoe
[C] Orobanche
[D] Ganoderma



Question No:5

Which one of the following organisms reproduces sexually only once in its life time?

[A] Banana plant
[B] Mango
[C] Tomato
[D] Eucalyptus



Question No:6

Assertion: Ecology is basically concerned with four levels of biological organization organism, populations, communities and biomes.
Reason: Ecology is a subject which studies the interactions among organisms and between the organism & its physical environment.

[A] IF both the assertion and the reason are true and- the reason is, a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason



Question No:7

Assertion: Temperature is the most ecologically relevant environmental factor
Reason: Temperature affects kinetics of enzyme.

[A] IF both the assertion and the reason are true and- the reason is, a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason



Question No:8

Assertion: Many species of small plants (herbs & shrubs) growing in forests are adapted to photosynthesize optimally under very low light conditions.
Reason: These plants are constantly overshadowed by tall, canopied trees.

[A] IF both the assertion and the reason are true and- the reason is, a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason



Question No:9

Assertion: Availability of light on land is closely linked with that of temperature.
Reason: Sun is source for both light & temperature.

[A] IF both the assertion and the reason are true and- the reason is, a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason



Question No:10

Assertion: Mammals can thrive weather they live in Antarctica or in Sahara desert.
Reason: Success of mammals is largely due to their ability to maintain a constant body temperature.

[A] IF both the assertion and the reason are true and- the reason is, a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason



Question No:11

Assertion: Very small animals are rarely found in Polar Regions.
Reason: Small animals have a larger surface area relative to their volume; they tend to lose body heat very fast when it is cold outside.

[A] IF both the assertion and the reason are true and- the reason is, a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason



Question No:12

Assertion: Mammals from colder climates generally have shorter ears and limbs.
Reason: It is to maximize heat loss.

[A] IF both the assertion and the reason are true and- the reason is, a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason



Question No:13

Assertion: Predators can help in maintaining species diversity in a community.
Reason: It is by reducing the intensity of competition among competing prey species.

[A] IF both the assertion and the reason are true and- the reason is, a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason



Question No:14

Assertion: Mycorrhizae are association between fungi & roots of higher plants.
Reason: Lichens represent mutualistic relationship between fungus and photo synthetic algae or cyanobacteria.

[A] IF both the assertion and the reason are true and- the reason is, a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason



Question No:15

Assertion: Parasitism and predation are considered to be negative interactions.
Reason : Parasites and predators limit the population of their host species.

[A] IF both the assertion and the reason are true and- the reason is, a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true but the reason is false
[D] If both the assertion and reason