Ecology and Habitats5/5: Ecology and Habitats Quiz Ecology & Habitats Quiz Which of these environmental factors can influence the formation of a habitat?* Altitude Rainfall Temperature All of the Above Hint: Think about the habitat zones of the Galapagos and how they differ in environmental conditionsIt is always possible to draw clear lines identifying where one habitat zone ends and another habitat zone starts.* True False Hint: Think about how species from two neighbouring habitat zones will interactWhat does a food chain show?* Differences in size between species within a habitat A series of species that live in the same habitat but do not interact The linear transfer of energy from producers to consumers Hint: Think about what happens between tropic levels in a food chainWhat happens to biomass through each stage of the food chain.* Decreases Increases Remains the same Hint: Think about the difference between the total mass of all producers (such as trees) and all apex predators (such as hawks) within an ecosystemHow can biodiversity benifit an ecosystem?* Biodiversity can help to stabilise an ecosystem Biodiversity is an important factor in ensuring ecosystem health The more biodiverse an ecosystem, the less vulnerable it will be to fluctuation in keystone species populations All of the Above Hint: Biodiversity is the measure of the difference between the living organisms within an ecosystemWhich of these statements best describes a keystone species?* Keystone species are the largest and most numerous species in an ecosystem Keystone species are always apex predators If a keystone species disappears, the entire ecosystem will change dramatically or collapse Hint: Think about what would happen if the Galapagos giant tortoise was to disappear from the IslandsHow do Galapagos giant tortoises shape the environment they live in?* They disperse plant seeds They trample plants, clearing areas for other species They keep fast-growing plants under control All of the Above Hint: The Galapagos giant tortoise is a keystone speciesInvasive species pose the greatest threat to biodiversity in Galapagos.* True False Hint: Invasive species in Galapagos include the hill raspberry, rats, goats and fire ants
