# Asymptote in a logistic growth curve is obtained, when (1) The value of 'r' approaches zero (2) K = N (3) K > N (4) K < N

Subtopic:  Population: Logistic Growth Model |
74%
NEET - 2017
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Mycorrhizae are the example of

(1) fungistasis

(2) amensalism

(3) antibiosis

(4) mutualism

Subtopic:  Population Interactions: Commensalism, Protocooperation & Mutualism |
92%
From NCERT
NEET - 2017
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Which of the following is correct for r-selected species?

(1) Large number of progeny with small size

(2) Large number of progeny with large size

(3) Small number of progeny with small size

(4) Small number of progeny with large size

Subtopic:  Life History Variations |
70%
NEET - 2016
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If '+' sign is assigned to beneficial interaction, '-' sign to detrimental and '0' sign to neutral interaction, then the population interaction represented by '+' '-' refers to

(1) Mutualism

(2) Amensalism

(3) Commensalism

(4) Parasitism

Subtopic:  Population Interactions: Parasitism |
88%
From NCERT
NEET - 2016
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The principle of competitive exclusion was stated by

(1) C Darwin

(2) GF Gause

(3) MacArthur

(4) Verhuisd and Pearl

Subtopic:  Population Interactions: Competition |
70%
From NCERT
NEET - 2016
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When does the growth rate of a population following the logistic model equal zero? The logistic model is given as dN/dt = rN(1-N/K)

(1) when N nears the carrying capacity of the habitat

(2) when N/K equals zero

(3) when death rate is greater than birth rate

(4) when N/K is exactly one

Subtopic:  Population: Logistic Growth Model |
60%
NEET - 2016
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Gause's principle of competitive exclusion states that

 1 Competition for the same resources excludes species having different food preferences 2 No two species can occupy the same niche indefinitely for the same limiting resources 3 Larger organisms exclude smaller ones through competition 4 More abundant species will exclude the less abundant species through competition
Subtopic:  Population Interactions: Competition |
67%
From NCERT
NEET - 2016
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An association of individuals of different species living in the same habitat and having functional interactions is.

1. ecological niche

2. biotic community

3. ecosystem

4. population

Subtopic:  Introduction to Ecology |
From NCERT
NEET - 2015
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In which of the following interactions both partners are adversely affected?

(1) Competition

(2) Predation

(3) Parasitism

(4) Mutualism

Subtopic:  Population Interactions: Competition |
89%
From NCERT
NEET - 2015
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Most animals are tree dwellers in a

1. coniferous forest

2. thorn woodland

3. temperate deciduous forest

4. tropical rainforest

Subtopic:  Introduction to Ecology |
59%
NEET - 2015