Which of the following forests in Canada is NOT rare and/or threatened? Select one: a. Douglas fir-dominated dry coastal forest in British Columbia b. Carolinian forest in southern Ontario c. Garry-oak-dominated forest on Vancouver Island d. Mixedwood forest of the St. Lawrence Valley Which of the following statements most accurately represents the current view of the relationship between ecosystem stability and biodiversity? Select one: a. The relationship between ecosystem stability and biodiversity has not been fully resolved. b. The relationship between ecosystem stability and biodiversity depends largely on size and geographic location. c. Ecosystems with greater levels of biodiversity are more stable because species redundancy protects ecosystem function from disturbance. d. Ecosystems with greater levels of biodiversity are more stable because they are buffered against perturbations at the community level. Canada has been considered a leader in biodiversity conservation among industrialized nations for which of the following reasons? Select one: a. Canada has fewer species listed as endangered or critically endangered than any other industrialized nation. b. Canada was the first industrialized nation to sign the Convention on Biological Diversity (CBD). c. Canada has the strongest environmental protection legislation (CEPA) of any industrialized nation. d. Canada received the highest rating of all industrialized nations from the IUCN for habitat conservation. According to the CBD definition, which of the following factors is NOT an important component of biodiversity? Select one: a. variation in the types of communities in an ecosystem b. the biomass of organisms in a large geographic area c. genetic variation among and within populations d. species richness in a community Which of the following factors does NOT have a direct effect on the amount of genetic variation present in a population? Select one: a. phenotypic plasticity b. gene flow c. genetic drift d. natural selection Which of the following genetic elements are analyzed in DNA fingerprinting? Select one: a. alleles that control phenotypic plasticity b. the degree of heterozygosity c. highly variable regions of the genome d. sex chromosomes
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a. Douglas fir-dominated dry coastal forest in British Columbia b. Carolinian forest in southern Ontario c. Garry-oak-dominated forest on Vancouver Island Show more…
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In Canada, starlings and sparrows have had a strong negative impact on which of the following groups of birds? Select one: a. migratory birds b. flocking and roosting birds c. seed-eating birds d. cavity-nesting birds Question 22: Which of the following states the critical difference between a "keystone" species and a "flagship" species? Select one: a. A keystone species has a disproportionately large effect on a community; a flagship species is a species whose presence indicates the health of the community. b. A keystone species is ecologically important; a flagship species is important because of its attractiveness to the public. c. A keystone species is a species whose presence indicates the health of the community; a flagship species has a disproportionately large effect on a community. d. A keystone species is important because of its attractiveness to the public; a flagship species is ecologically important. Question 23: According to the theory of island biogeography, which of the following types of "islands" will support the greatest number of species? Select one: a. small islands close to the mainland b. large islands far from the mainland c. small islands far from the mainland d. large islands close to the mainland Question 24: Which of the following Canadian bird species experienced a population decline that was NOT related to overhunting and/or habitat loss? Select one: a. trumpeter swan b. wood duck c. wild turkey d. peregrine falcon Question 25: Which of the following describes the three main objectives of the Convention on Biological Diversity (CBD)? Select one: a. identifying and cataloguing biodiversity, preserving marine habitats, limiting the spread of invasive species b. conserving biodiversity, promoting sustainable use, sharing genetic resources c. slowing extinction rates, conserving genetic hotspots, reducing stressors d. disseminating information, promotion biodiversity in developing countries, protecting land
5. Boreal forests have A) migrating animals B) large amounts of aquatic protists C) most nutrients in the plants, not the soil D) a layer of soil permanently frozen beneath the topsoil E) trees with lush green leaves in the spring that are lost as the season changes. 7. Without genetic diversity, a species will most likely... A) go extinct B) become resistant to diseases C) not be able to fight off an invasive species D) grow above its carrying capacity for the habitat and ecosystem E) all of the above 10. Deciduous trees, such as beech, maple, elms, birch, hickory, and willow, and coniferous trees (pines and firs), are characteristic of forests classified as A) taiga B) temperate C) Tropical D) deserts E) prairies and savannas 11. Anthropogenic actions have led to the melting of the polar ice caps, which contributes greatly to the following, which affects biodiversity of plant and animal species: A) deforestation B) flooding C) climatic changes D) the Greenhouse effect E) all of the above 12. Malaria has killed more people than all our wars put together. One cure produced from the bark of the Cinchona tree is called: A) morphine B) codeine C) belladonna D) quinine E) Taxol 14. One of the most widely manufactured synthetic fibers, _________, used in the production of cloth products such as clothing, towels, curtains, is produced from cellulose of wood pulp of pine, spruce, or hemlock trees or cotton. A) animal fur B) silk C) linen D) rayon E) animal skins - leather 15. The biggest threat to plant and animal wildlife is A) a variety of predators B) illegal fishing and hunting of animal species C) loss of habitat D) air and water pollution E) all of the above
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