Which of the following statements about predation is correct?

Predators can prevent prey populations from achieving high densities.

Predation is a form of mutualism where both predator and prey benefit.

Predators can prevent prey populations from achieving high densities.

Herbivores are not considered predators in ecological terms.

Overexploitation of prey by predators leads to the extinction of both predator and prey species.

Mycorrhiza represents

symbiotic association between a fungus and roots of higher plants

symbiotic association between a fungus and liverworts

parasitic association between a fungus and an alga

parasitic association between a fungus and roots of plants

symbiotic association between a fungus and roots of higher plants

Which of the following adaptations are examples of plant defenses against herbivores?

High reproductive rate of a parasitic plant.

Camouflage in insects like the Monarch butterfly.

Which of the following are examples of parasitism?

The human liver fluke’s life cycle involving two intermediate hosts.

interaction between sea anemone that has stinging tentacles and the clown fish

The Monarch butterfly’s chemical defenses.

A lichen growing on a tree branch.

The human liver fluke’s life cycle involving two intermediate hosts.

How does a carnivore population increase?

Due to the increase in the population of herbivore

Due to the decrease in the availability of grass

Due to the increase in the population of omnivore

Due to the increase in the population of scavenger

Due to the increase in the population of herbivore

NEET Exam > NEET Test > Biology Class 12 > Test: Population Interactions - NEET MCQ

Population Interactions - Free MCQ Practice Test with solutions, NEET Biology

MCQ Practice Test & Solutions: Test: Population Interactions (12 Questions)

You can prepare effectively for NEET Biology Class 12 with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Population Interactions". These 12 questions have been designed by the experts with the latest curriculum of NEET 2026, to help you master the concept.

Test Highlights:

- Format: Multiple Choice Questions (MCQ)
- Duration: 12 minutes
- Number of Questions: 12

Test: Population Interactions - Question 1

Refer to the given table. If '+' sign has been assigned for beneficial interaction, sign for detrimental interaction and '0' for neutral interaction, identify the type of interaction (i), (ii) and (iii) and select the correct option.

A.
a
B.
b
C.
c
D.
d

Detailed Solution: Question 1

In competition, both species are harmed. In predation and parasitism, one species derives benefit and the other one is harmed. Commensalism is an interaction in which one species is benefitted and other one remains unaffected.

Topic in NCERT: Population Interactions

Line in NCERT: "Even in minimal communities, many interactive linkages exist, although all may not be readily apparent. Interspecific interactions arise from the interaction of populations of two different species. They could be beneficial, detrimental or neutral (neither harm nor benefit) to one of the species or both."

Test: Population Interactions - Question 2

Read the following statements and select the correct option.
Statement 1: Brood parasitism in birds is an example of parasitism in which the parasitic bird lays its eggs in the nest of its host and the host incubates them.
Statement 2: During the course of evolution, the eggs of the parasite bird have evolved to resemble the host's eggs in size and colour to reduce the chances of the host bird detecting the foreign eggs and removing them from the nest.

A.
Statement 1 is correct but statement 2 is incorrect but statement 2 is not correct explanation of statement 1
B.
Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1
C.
Statement 1 is correct but statement 2 is incorrect
D.
Both statements 1 and 2 are incorrect

Detailed Solution: Question 2

The correct option is:

2. Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1

Explanation:

- Statement 1 is correct: Brood parasitism in birds involves a parasitic bird laying its eggs in the nest of a host bird, and the host bird then incubates these eggs.

- Statement 2 is correct: During the course of evolution, the eggs of parasitic birds have evolved to resemble the host's eggs in size and color. This adaptation reduces the chances of the host bird detecting the foreign eggs and removing them from the nest.

Therefore, statement 2 provides the correct explanation for statement 1.

Topic in NCERT: Parasitism

Line in NCERT: "Brood parasitism in birds is a fascinating example of parasitism in which the parasitic bird lays its eggs in the nest of its host and lets the host incubate them. During the course of evolution, the eggs of the parasitic bird have evolved to resemble the host's egg in size and colour to reduce the chances of the host detecting the foreign eggs and ejecting them from the nest."

Test: Population Interactions - Question 3

Refer to the given table that summarises the interactions between two organisms (organisms 1 and organism 2). Identify the types of interaction (A,B and C) and select the correct answer.
(i) A can be either predation or parasitism
(ii) B can be either commensalism
(iii) C can be amensalism.
(iv) A can be amensalism,

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

Detailed Solution: Question 3

A can be either predation or parasitism since one species is harmed and the other is benefitted. B is commensalism since one species is benefitted and other has no effect on it. C can be amensalism since one species is harmed and the other has no effect on it.

Topic in NCERT: Interspecific interactions

Line in NCERT: "Both the species benefit in mutualism and both lose in competition in their interactions with each other. In both parasitism and predation only one species benefits (parasite and predator, respectively) and the interaction is detrimental to the other species (host and prey, respectively). The interaction where one species is benefitted and the other is neither benefitted nor harmed is called commensalism. In amensalism on the other hand one species is harmed whereas the other is unaffected."

Test: Population Interactions - Question 4

What is 'resource partitioning' and how does it help species co-exist?

A.
It refers to species dividing resources like food or space to reduce competition.
B.
It is a process where one species eliminates another due to competitive superiority.
C.
It enables species to share the same habitat without harm.
D.
It allows species to access the same resource in the exact same way and at the same time.

Detailed Solution: Question 4

Resource partitioning is a strategy where species share the same resources but divide them in a way that reduces competition, allowing them to coexist. This can be through spatial or temporal division of resources.It allows species to access the same resource at different times or in different ways.

Topic in NCERT: Competition and Co-existence

Line in NCERT: "One such mechanism is ‘resource partitioning'. If two species compete for the same resource, they could avoid competition by choosing, for instance, different times for feeding or different foraging patterns."

Test: Population Interactions - Question 5

When one population is harmed and the other remains unaffected, the relationship is called

A.
Protocooperation
B.
Predation
C.
Amensalism
D.
Parasitism

Detailed Solution: Question 5

In ammensalism one component (population) is harmed and the other remains unaffected. The alga Microcystis release hydroxyl amine that kills the surrounding fauna but the alga itself remain unaffected. Parasitism is generally considered to deal with any small organism that live on or in another organism regardless of whether its effect is negative, positive or neutral. In predation one population adversaly affects the other by direct attack but nevertheless depends on other. In exploitation one species harms the other by making its direct or indirect use for support, shelter or food.

Topic in NCERT: Amensalism

Line in NCERT: "In amensalism on the other hand one species is harmed whereas the other is unaffected."

About this NEET Practice Test

This test contains 12 MCQs on Population Interactions with detailed solutions for each question. It is part of the Biology Class 12 course on EduRev, designed to align with the current NEET syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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