Test on Fundamentals of Environmental Science

Question 1: Species diversity measures the variety and abundance of different species in a given area, indicating the complexity of a food web or ecosystem.

A. Ano

B. Ne

Explanation: Species diversity is defined as the measure of the variety and abundance of different species in a given area, ranging from microbes to animals and plants. It indicates the complexity of a food web or ecosystem.

Question 2: Habitat destruction is identified as the most significant threat to biodiversity.

A. Ano

B. Ne

Explanation: The study materials state that habitat destruction is the most significant threat to biodiversity, involving the loss, fragmentation, and degradation of natural environments due to agriculture, urbanization, and deforestation.

Question 3: According to the study materials, which of the following is an example of overexploitation, a key threat to biodiversity?

A. The conversion of natural grasslands into urban developments.

B. The illegal wildlife trade driven by high market demand for animal parts.

C. The introduction of non-native species that outcompete native organisms.

D. Shifting weather patterns causing changes in species' natural ranges.

Explanation: Overexploitation is defined as the unsustainable removal of organisms from their natural habitats, specifically including illegal wildlife trade for parts like ivory or rhino horn, often pushed by high market demand. The other options describe habitat destruction (urban development), invasive species, and climate change, respectively.

Question 4: According to the study materials, what is the definition of genetic diversity?

A. The variation of genes within a species, including variations between populations and individuals.

B. The variety and abundance of different species in a given area.

C. The variety of habitats, communities, and ecological processes in a specific region or across the planet.

D. The ability of an ecosystem to recover from disturbances such as natural disasters.

Explanation: The study materials define genetic diversity as "the variation of genes within a species, including variations between populations and individuals." Options describing species diversity, ecosystem diversity, or ecosystem resilience are incorrect.

Question 5: An ecosystem is defined as a dynamic community of only plants and animals interacting with their non-living environment as a functional unit.

A. Ano

B. Ne

Explanation: According to the study materials, an ecosystem is defined as a dynamic community of plants, animals, and microorganisms interacting with their non-living environment as a functional unit. The statement incorrectly limits the living components to 'only plants and animals', excluding microorganisms.