Ecology - Organisms & Populations

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Q1. What is the term for the gradual process of change and replacement in the species composition of a given area? (2022)

Solution:

Succession is the process of change in the species structure of an ecological community over time.

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Q2. What is carrying capacity? (2021)

Solution:

Carrying capacity is the maximum number of individuals of a species that an environment can sustainably support.

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Q3. Which of the following best describes a climax community? (2018)

Solution:

A climax community is a stable and mature ecological community that has reached a steady state.

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Q4. In a food chain, which of the following is the primary producer? (2019)

Solution:

Primary producers are organisms that produce their own food, primarily plants through photosynthesis.

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Q5. What type of interaction occurs when two species compete for the same resources? (2021)

Solution:

Competition occurs when two species vie for the same limited resources, which can negatively impact both species.

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Q6. Which of the following best describes a population? (2020)

Solution:

A population is defined as all individuals of a particular species that live in a specific area.

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Q7. Which of the following terms describes the maximum population size that an environment can sustain? (2018)

Solution:

Carrying capacity is the maximum number of individuals of a species that an environment can support sustainably.

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Q8. Which of the following is an example of a mutualistic relationship? (2023)

Solution:

Bees pollinating flowers is a mutualistic relationship where both species benefit from the interaction.

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Q9. Which of the following is NOT a characteristic of r-selected species? (2019)

Solution:

R-selected species are characterized by high fecundity and short lifespans, not long gestation periods.

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Q10. What is the primary characteristic of a K-selected species? (2023)

Solution:

K-selected species typically exhibit high parental care and invest more resources in fewer offspring.