ESS - Topic 3.1 - Introducing biodiversity

Critical biodiversity hot spots are located ...?

• In open oceans

• In deserts and tundra biomes

• In areas with high human development

• In coastal environments and tropical rainforests

The current rate of species becoming extinct in the last hundred years has ...?

• Increased due to natural catastrophies

• Increased largely due to human developments

• Decreased due to human conservation efforts

• Largely remained unchanged as it is a natural evolutionary process

Species diversity is determined from ...?

• The total population of all species

• All of these

• The eveness of populations of the species found

• the number of species or species richness

Biodiversity is important to ecosystems because ....?

• it increases as trophic levels increase

• It increases the ecosystem's stability

• It decreases the ecosystem's productivity

• It decreases the less human impact

The greatest loss in biodiversity due to human activity is occurring in which biome?

• Boreal forest

• Tundra

• Savannah

• Tropical rainforest

Sea otters eat sea urchins while sea urchins eat kelp (pacific seaweed). If sea otters are hunted, how does this affect the ecosystem?

• The population of the sea urchins will increase

• The biomass of the kelp will be reduced

• The biodiversity of the ecosystem is reduced

• The biodiversity of the ecosystem is increased

Which type of biodiversity considers both biotic and abiotic factors?

• None of these

• Genetic diversity

• Species diversity

• Habitat diversity

Biodiversity can be defined as ....?

• Species diversity

• Genetic diversity

• All of these

• Habitat diversity

Which of the following activities is likely to cause the diversity index of a study site to be higher in the future compared to others?

• Increasing the number of roads through the tropical rainforest to encourage tourism in Indonesia

• The Cayman Islands banning fishing on all coral reefs.

• North America converting more land to agriculture to feed a growing world population.

• Mangrove forests cut down for shrimp farms in Thailand.

Which of the following human activities does NOT depend on biodiversity?

• Agriculture

• Fishing

• Pharmaceuticals

• Tourism