Asymptote in a logistic growth curve is obtained when:
1. K = N
2. K > N
3. K < N
4. The value of 'r' approaches zero
1. | All the biological factors in the organism environment |
2. | The physical space where an organism lives |
3. | The range of temperature that the organism needs to live |
4. | The functional role played by the organism where it lives |
Natality refers to:
1. Death rate
2. Birth rate
3. Number of individuals leaving the habitat
4. Number of individuals entering the habitat
1. | pre-reproductive individuals are more than reproductive individuals. |
2. | reproductive individuals are less than post-reproductive individuals. |
3. | reproductive and pre-reproductive individuals are equal in number. |
4. | pre-reproductive individuals are less than reproductive individuals. |
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
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
1. Commensalism
2. Mutualism
3. Parasitism
4. Amensalism
The principle of competitive exclusion was stated by?
1. C. Darwin
2. G. F. Gause
3. MacArthur
4. Verhulst and Pearl
1. | when N nears the carrying capacity of the habitat |
2. | when N/K equals zero |
3. | when the death rate is greater than the birth rate |
4. | when N/K is exactly one |
An association of individuals of different species living in the same habitat and having functional interactions is known as:
1. | Ecological niche | 2. | Biotic community |
3. | Ecosystem | 4. | Population |