The equation of Verhulst-Pearl logisitic growth model is
$$\dfrac {dN}{dt}=rN \left[\dfrac {K-N}{K}\right ]$$
From this equation, K indicates:
1. Biotic potential
2. Carrying capacity
3. Population density
4. Intrinsic rate of natural increase
Subtopic:  Population: Logistic Growth Model |
80%
From NCERT
NEET - 2024
Hints

Given below are two statements:
 Statement I: Gause's competitive exclusion principle states that two closely related species competing for different resources cannot exist indefinitely. Statement II: According to Gause's principle, during competition, the inferior will be eliminated. This may be true if resources are limiting.

In the light of the above statements, choose the most appropriate answer from the options given below:
 1 Both Statement I and Statement II are False. 2 Statement I is True but Statement II is False. 3 Statement I is False but Statement II is True. 4 Both Statement I and Statement II are True.
Subtopic:  Population Interactions: Commensalism, Protocooperation & Mutualism |
54%
From NCERT
NEET - 2024
Hints

Given below are two statements :
 Statement I: When the fitness of one species is significantly lower in the presence of another species, the process is defined as competition. Statement II: When fungi remain in association with living plants or animals, they are called saprophytes.
In  light of the above statements, choose the correct answer from the options given below :
1. Both Statement I and Statement II are True
2. Both Statement I and Statement II are False
3. Statement I is True but Statement II is False
4. Statement I is False but Statement II is True
Subtopic:  Population Interactions: Competition | Population Interactions: Commensalism, Protocooperation & Mutualism |
66%
From NCERT
NEET - 2024
Hints

The population growing in a habitat with limited resources will show:
 A. Lag phase, followed by phases of acceleration and deceleration and finally an asymptote. B. The ability to realise its innate potential to grow in number and reach enormous densities in short time. C. Exponential growth D. Logistic growth
Choose the correct answer from the options given below:
1. A and B only
2. C and D only
3. A and D only
4. B and C only
Subtopic:  Population: Logistic Growth Model |
86%
From NCERT
NEET - 2024
Hints

Which of the following is not an example of mutualism?
1. Lichens
2. Mycorrhizae
3. An orchid on a branch of mango plant
4. The wasp pollinating fig inflorescence
Subtopic:  Population Interactions: Commensalism, Protocooperation & Mutualism |
85%
From NCERT
NEET - 2024
Hints

Given below are two statements: One is labelled as
Assertion (A) and the other is labelled as Reason (R).
 Assertion (A): The interaction, in which one species benefits and the other is neither harmed nor benefitted, is known as commensalism. Reason (R): Egrets always forage close to where the cattles are grazing, otherwise it is difficult for the egrets to find the insect and catch.
In the light of the above statements, choose the correct answer from the options given below:
 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 |
51%
From NCERT
NEET - 2024
Hints

Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R).
 Assertion (A): Connell's elegant field experiment showed that on the rocky sea, the larger and competitively superior barnacles dominate the intertidal area and exclude the smaller barnacles from that area. Reason (R): Generally, herbivores and plants appear to be more adversely affected by competition than carnivores.
In the light of the above statements, choose the correct answer from the options given below:
 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: Competition |
76%
From NCERT
NEET - 2024
Hints

Match List-I with List-II:
 List-I List-II A. Predator I. Ophrys B. Mutualism II. Pisaster C. Parasitism III. Female wasp and fig D. Sexual deceit IV. Plasmodium
Choose the correct answer from the options given below:
1. A-III,B-II,C-I,D-IV
2. A-IV,B-I,C-II,D-III
3. A-II,B-III,C-I,D-IV
4. A-II,B-III,C-IV,D-I
Subtopic:  Population Interactions: Competition | Population Interactions: Predation | Population Interactions: Parasitism | Population Interactions: Commensalism, Protocooperation & Mutualism |
80%
From NCERT
NEET - 2024
Hints

Match List-I with List-II:
 List-I List-II A. Migratory flamingoes and resident fish in South American lakes I. Interference competition B. Abingdon tortoise became extinct after introduction of goats in their habitat II. Competitive release C. Chathamalus expands its distributional range in the absence of Balanus III. Resource partitioning D. Five closely related species of Warblers feeding in different location on the same tree IV. Interspecific competition
Choose the correct answer from the options given below:
1. A-I,B-IV,C-III,D-II
2. A-IV,B-I,C-II,D-III
3. A-III,B-I,C-II,D-IV
4. A-II,B-IV,C-III,D-I
Subtopic:  Population Interactions: Competition |
84%
From NCERT
NEET - 2024
Hints