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Q. No.

Match List-I with List-II.
List-I List-II
A. Logistic growth I. Unlimited resource availability condition
B. Exponential growth II. Limited resource availability condition
C. Expanding age pyramid III. The percent individuals of pre-reproductive age is largest followed by reproductive and post reproductive age groups
D. Stable age pyramid IV. The percent individuals of pre-reproductives and reproductive age group are same
Choose the correct answer from the options given below:
Options: A B C D
1. II IV III I
2. II I III IV
3. II III I IV
4. II IV I III

Subtopic:  Population: Exponential Growth Model | Population: Logistic Growth Model | Age Pyramid |
 93%
Level 1: 80%+
NEET - 2023
Hints
Match each item in Column-I with one in Column-II and select the correct match from the codes given:
Column-I
[Population Interaction]		 Column-II
[Example]
A. Mutualism P. An orchid growing as an epiphyte on a mango branch
B. Commensalism Q. Chthamalus and Balanus 
C. Parasitism R. Fig trees and wasp species
D. Competition S. Cuscuta growing on hedge plants
Codes:
A B C D
1. R P Q S
2. R P S Q
3. P R S Q
4. P R Q S
Subtopic:  Population Interactions: Competition | Population Interactions: Parasitism | Population Interactions: Commensalism, Protocooperation & Mutualism |
 88%
Level 1: 80%+
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If the population pyramid of an associated population has an extremely broad base, it is:
1. a rapidly expanding population
2. a stable population
3. a population where there were more old individuals than
young individuals
4. a population with more males than females
Subtopic:  Population Attributes |
 83%
Level 1: 80%+
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Consider the given two statements:
Assertion (A): Predation is more severe for plants.
Reason (R): They cannot run away from their predators.
 
1. Both (A) and (R) are True and (R) explains (A).
2. Both (A) and (R) are True but (R) does not explain (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Subtopic:  Population Interactions: Predation |
 93%
Level 1: 80%+
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Assertion (A): Population ecology is an important area in Biology.
Reason (R): It links ecology to population genetics and evolution.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True, but (R) is not the correct explanation of (A).
3. (A) is True, but (R) is False.
4. (A) is False, but (R) is True.
Subtopic:  Population Attributes |
 88%
Level 1: 80%+
Hints
Assertion(A): Egrets always forage close to cattle.
Reason(R): They depend on cattle's movement by which soil insects get stirred up & flushed out and egrets get their food (soil insects) easily.

Choices for Assertions and reasons:
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic:  Population Interactions: Commensalism, Protocooperation & Mutualism |
 93%
Level 1: 80%+
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Assertion (A): Plants are more affected by their predators compared to animals.
Reason (R): Plants cannot run away from their predators while animals can.

Choices for Assertions and reasons:
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True, but (R) is not the correct explanation of (A).
3. (A) is True, but (R) is False.
4. (A) is False, but (R) is True.
Subtopic:  Population Interactions: Predation |
 93%
Level 1: 80%+
Hints
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Ability to maintain a constant internal environment enhances the overall ‘fitness’ of the species.
Reason (R): A constant internal environment permits all biochemical reactions and physiological functions to proceed with maximal efficiency.
 In the light of the above statements, choose the most appropriate answer from the options given below :
1. (A) is true but (R) is false.
2. (A) is false but (R) is true.
3. Both (A) and (R) are true and (R) explains (A).
4. Both (A) and (R) are true but (R) does not explain (A).
Subtopic:  Life History Variations |
 87%
Level 1: 80%+
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Which of the following is most appropriately defined?
1. Commensalism is a relationship in which one species is benefitted and the other is neither benefited nor harmed.
2. Parasite is an organism which always lives inside the body of other organism and may kill it
3. Competition is defined as a process in which the fitness of one species is significantly higher in the presence of another species
4. Mutualism is a relationship in which one species is benefitted whereas the other is unaffected
Subtopic:  Population Interactions: Commensalism, Protocooperation & Mutualism |
 89%
Level 1: 80%+
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Read the following statements and select the correct option w.r.t. population attributes
a. Population density is necessarily measured in numbers
b. Tiger census is often based on pug marks and fecal pellets
c. Biomass is not a meaningful measure to know population size.
d. Size of a population for any species is not a static parameter
1. (a) & (b)
2. (a) & (d)
3. (c) & (d)
4. (b) & (d)
Subtopic:  Population Attributes |
 77%
Level 2: 60%+
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