Environmental Studies ยท Biology

Ecology and Biodiversity

1,739 Questions

Ecology and biodiversity are vital topics in environmental studies, covering ecosystem structures, species diversity, and environmental impacts. These concepts are frequently tested in competitive examinations for civil services and state selections. The questions cover carrying capacity, ecological succession, and conservation fundamentals.

Species richness measurementTypes of ecological diversityBiome distribution factorsCarrying capacity conceptEcosystem servicesEnvironmental Impact Assessment

Ecology and Biodiversity Questions

Multiple choice

Which of the following is not a type of functional diversity?

  1. Species richness.

  2. Functional richness.

  3. Functional evenness.

  4. Functional divergence.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Species richness is a measure of the number of species in an ecosystem. Functional diversity, on the other hand, is a measure of the variety of traits and functions performed by organisms in an ecosystem. Functional richness is a measure of the total number of functions performed by organisms in an ecosystem. Functional evenness is a measure of how evenly the functions are distributed among the species in an ecosystem. Functional divergence is a measure of how different the functions performed by different species are.

Multiple choice

The fundamental niche of an organism represents:

  1. The range of resources and conditions that an organism can potentially occupy

  2. The range of resources and conditions that an organism actually occupies

  3. The range of resources and conditions that an organism prefers

  4. The range of resources and conditions that an organism can tolerate
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The fundamental niche represents the full range of resources and conditions that an organism is capable of utilizing, regardless of competition or other limiting factors.

Multiple choice

The realized niche of an organism is:

  1. The range of resources and conditions that an organism can potentially occupy

  2. The range of resources and conditions that an organism actually occupies

  3. The range of resources and conditions that an organism prefers

  4. The range of resources and conditions that an organism can tolerate
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The realized niche represents the actual range of resources and conditions that an organism utilizes, taking into account competition and other limiting factors.

Multiple choice

Which of the following is NOT an example of an ecosystem service provided by habitats?

  1. Water purification

  2. Climate regulation

  3. Food production

  4. Pollution absorption
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pollution absorption is not an ecosystem service provided by habitats. Instead, habitats provide services such as water purification, climate regulation, and food production.

Multiple choice

In the context of oxygen production, why is biodiversity important?

  1. It ensures a diverse range of photosynthetic organisms.

  2. It promotes ecosystem resilience to environmental changes.

  3. It facilitates nutrient cycling and soil health.

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Biodiversity provides a variety of benefits that contribute to oxygen production.

Multiple choice

What is an ecological niche?

  1. The role and position of an organism in its environment

  2. The physical space occupied by an organism

  3. The range of environmental conditions in which an organism can survive

  4. The resources used by an organism
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

An ecological niche is the role and position of an organism in its environment, including its interactions with other organisms and the physical and chemical conditions of its habitat.

Multiple choice

What is the term used to describe the variety of life on Earth, including the different species of plants, animals, and microorganisms, as well as the genetic variation within each species?

  1. Biodiversity

  2. Ecosystem Services

  3. Climate Change

  4. Pollution
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Biodiversity encompasses the diversity of species, genetic variation, and ecosystems on Earth.

Multiple choice

Which of the following is NOT an example of an ecosystem service provided by biodiversity?

  1. Water purification

  2. Climate regulation

  3. Pollination

  4. Erosion control
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Erosion control is not directly related to biodiversity, although healthy ecosystems can contribute to soil stability and reduce erosion.

Multiple choice

What is the term used to describe the interconnectedness and interdependence of species within an ecosystem?

  1. Biodiversity

  2. Ecosystem Services

  3. Food Web

  4. Symbiosis
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A food web is a complex network of interconnected food chains, illustrating the feeding relationships between different species in an ecosystem.

Multiple choice

What is the term used to describe the unique characteristics or qualities of a particular ecosystem or habitat?

  1. Biodiversity

  2. Ecosystem Services

  3. Biocultural Diversity

  4. Endemism
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Endemism refers to the presence of species or taxa that are unique to a particular geographic region or habitat.

Multiple choice

Which of the following is NOT a key component of biodiversity?

  1. Genetic diversity

  2. Species diversity

  3. Ecosystem diversity

  4. Cultural diversity
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Biodiversity encompasses genetic, species, and ecosystem diversity, but cultural diversity, while important, is not a direct component of biodiversity.

Multiple choice

What is the relationship between cultural services and biodiversity?

  1. Cultural services are independent of biodiversity

  2. Cultural services are negatively affected by biodiversity loss

  3. Cultural services are positively affected by biodiversity loss

  4. Cultural services are both positively and negatively affected by biodiversity loss
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cultural services can be both positively and negatively affected by biodiversity loss. On the one hand, biodiversity loss can lead to the loss of cultural services that depend on specific species or ecosystems. On the other hand, biodiversity loss can also lead to the emergence of new cultural services as people adapt to changing environmental conditions.

Multiple choice

What is disturbance in the context of landscape evolution?

  1. A sudden change in the physical environment

  2. A gradual change in the physical environment

  3. A change in the biological community

  4. A change in the climate
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Disturbance is defined as a sudden change in the physical environment that disrupts the structure and composition of an ecosystem. This can be caused by natural events such as fires, floods, and storms, or by human activities such as logging, agriculture, and urbanization.

Multiple choice

What is the term used to describe the study of the interactions between organisms and their environment?

  1. Ecology

  2. Community ecology

  3. Ecosystem ecology

  4. Population ecology
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ecology is the study of the interactions between organisms and their environment. Community ecology is a branch of ecology that focuses on the interactions between different species within a community, while ecosystem ecology focuses on the interactions between organisms and their abiotic environment.

Multiple choice

What is the term used to describe the rate at which organic matter is produced by plants in an ecosystem?

  1. Primary production

  2. Secondary production

  3. Net primary production

  4. Gross primary production
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Gross primary production is the rate at which organic matter is produced by plants in an ecosystem.