In the exponential growth equation Nt =N0ert, e represents :

1. The base of natural logarithms 

2. The base of geometric logarithms

3. The base of number logarithms

4. The base of exponential logarithms

Subtopic:  Population: Exponential Growth Model |
 64%
From NCERT
NEET - 2021
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Amensalism can be represented as:

1. Species A (-) : Species B (-)

2. Species A (+) : Species B (0)

3. Species A (-) : Species B (0)

4. Species A (+) : Species B (+)

Subtopic:  Population Interactions: Amensalism |
 85%
From NCERT
NEET - 2021
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Inspite of interspecific competition in nature, which mechanism the competing species might have evolved for their survival?

1. Mutualism 2. Predation
3. Resource partitioning 4. Competitive release
Subtopic:  Population Interactions: Competition |
 74%
From NCERT
NEET - 2021
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The impact of immigration on population density is:

1. Negative
2. Both positive and negative
3. Neutralized by natality
4. Positive

Subtopic:  Population Characters: Density | Population Characters: Natality & Mortality |
 83%
From NCERT
NEET - 2020
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Match the items in Column-I with those in Column-II:

Column I Column II
a. Herbivores-Plants  (i) Commensalism
b. Mycorrhiza-Plants (ii) Mutualism
c. Sheep-Cattle  (iii) Predation
d. Orchid-Tree (iv) Competition


Select the correct option from the following:

Options: (a) (b) (c) (d)
1. (iv) (ii) (i) (iii)
2. (iii) (ii) (iv) (i)
3. (ii) (i) (iii) (iv)
4. (i) (iii) (iv) (ii)

Subtopic:  Population Interactions: Competition | Population Interactions: Predation | Population Interactions: Commensalism, Protocooperation & Mutualism |
 83%
From NCERT
NEET - 2020
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Which one of the following statements cannot be connected to Predation? 
 
1. It is necessitated by nature to maintain the ecological balance .
2. It helps in maintaining species diversity in a community. 
3. It might lead to the extinction of a species.
4. Both the interacting species are negatively impacted.
Subtopic:  Population Interactions: Predation |
 77%
From NCERT
NEET - 2022
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While explaining interspecific interaction of population, (+) sign is assigned for beneficial interaction, (-) sign is assigned for detrimental interaction and (0) for neutral interaction. Which of the following interactions can be assigned (+) for one species and (-) for another species involved in the interaction?
1. Competition
2. Predation
3. Amensalism
4. Commensalism

Subtopic:  Population Interactions: Predation |
 89%
From NCERT
NEET - 2022
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If '8' Drosophila in a laboratory population of '80' died during a week, the death rate in the population is ___________ individuals per Drosophila per week.
1. zero 
2. 0.1
3. 10
4. 1.0 
Subtopic:  Population Attributes |
 80%
From NCERT
NEET - 2022
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The process of individuals of the same species that have come into the habitat from elsewhere during the time period under consideration is referred as: 
1. Association 
2. Emigration 
3. Competition 
4. Immigration 

Subtopic:  Population Characters: Age Structure & Migration |
 86%
From NCERT
NEET - 2022
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Which of the following is the correct equation of exponential growth? 
1. \(N_t = N_0 ~e^{rnt}\)
2. \(N_t = N_0 ~e^{rpt}\)
3. \(N_t = N_0 ~e^{rst}\)
4. \(N_t = N_0 ~e^{rt}\)

Subtopic:  Population: Exponential Growth Model |
 92%
From NCERT
NEET - 2022
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