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What is true for individuals of same species?

1. Live in same niche

2. Live in same habitat

3. Interbreeding

4. Live in different habitat

Subtopic: Population Dynamic |

67%

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Carnivorous animals - lions and leopards, occupy the same niche but lions predate mostly larger animals and leopards take smaller ones. This mechanism of competition is referred to as:

1. Character displacement

2. Altruism

3. Resource partitioning

4. Competitive exclusion

Subtopic: Population Interactions: Competition |

81%

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Select the wrongly matched pair

1. Predator - Herbivore.

2. Brood parasitism - Cuckoo.

3. Commensalism - Barnacles on the whale.

4. Mutualism - Sea anemone on a hermit crab.

Subtopic: Population Interactions: Commensalism, Protocooperation & Mutualism |

73%

From NCERT

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Study the population growth curves shown in the above diagram.

Which option is the best for curve (i) and (ii)

Type of (i) curve | Type of (ii) curve | Status of food & space for curve (i) | Status & space for curve (i) | |

1. | Logistic curve | Exponential curve | Unlimited | Limited |

2. | Exponential curve | Logistic curve | Unlimited | Limited |

3. | Logistic curve | Exponential curve | Limited | Unlimited |

4. | Exponential curve | Logistic curve | Limited | Unlimited |

Subtopic: Population: Exponential Growth Model | Population: Logistic Growth Model |

87%

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Find the odd one out about levels of biological

organization:-

1. Biome

2. Community

3. Species

4. Population

Subtopic: Introduction to Ecology |

76%

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Verhulst-Pearl population growth is described by the equation

1. $\frac{dN}{dt}$ = rN

2. N_{t} = N_{0}e^{rt}

3. N_{t} = N_{0}+B+l-D-E

4. $\frac{dN}{dt}$ = rN$\left(\frac{K-N}{K}\right)$

Subtopic: Population: Logistic Growth Model |

87%

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Which the following pairs is wrongly matched while remaining three are correct

1. Allen’s rule – Mammals with shorter ears and limbs in colder area

2. Expanding population – High number of individual at pre-reproductive stage

3. Population density increasing – (B + I) < (D + E)

4. Carrying capacity – Logistic growth.

Subtopic: Population Characters: Density |

92%

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In nature, a given habitat has enough resources to support a maximum possible number, beyond which no further growth is possible. The limit is known as

1. Environmental resistance

2. Intrinsic rate of natural increase

3. Carrying capacity

4. Exponentially growth

Subtopic: Population: Logistic Growth Model |

87%

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Parasites evolved special adaptations in accordance with their life styles. Choose odd one out with respect to these adaptations.

1. High reproductive capacity

2. Simple life cycle and complex morphological, anatomical features

3. Loss of unnecessary sense organs

4. Loss of digestive system

Subtopic: Population Interactions: Parasitism |

80%

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Natural selection operates at the level of :-

1. Organism

2. Population

3. Community

4. Ecosystem

Subtopic: Introduction to Ecology | Population Attributes |

65%

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