Ducks Unlimited Final Exam Practice Questions And Answers

Ducks Unlimited Final Exam Practice Questions And Answers In what year was the Clean Water and Air Act created? - ANS 1948 What does NOT influence an organism's niche/survival? - ANS Commensalism- one benefits and the other derives neither benefit nor harm According to the presentation, ecosystem management was broadened by the establishment of which of the following in 1978? - ANS Conservation Biology Which of these is known to cause primary succession? - ANS Glacier Movement What are positive ecological interactions between organisms? - ANS Commensalism and Mutualism What conducts nitrogen fixation? - ANS Peanuts, Algae and Nitrogen- fixing bacteria. Humans DO NOT conduct nitrogen fixation. Which of the following best describes respiration? - ANS Intake of oxygen to convert glucose to energy Where is the phosphorus cycle primarily conducted? - ANS In soil and plants Which of the following is NOT a category of wetland biome? - ANS Tropical How would you best describe a pioneer species? - ANS The first species to colonize an area in primary succession What can influence an organism's niche/survival? - ANS Competition, Mutualism and Parasitism. What is mutualism? - ANS symbiosis that is beneficial to both organisms involved. What is parasitism? - ANS One organism benefits and the other is harmed What is primary succession? - ANS Succession that begins in an area with no remnants of an older community. The first to find habitat in an area. What wetlands is dominated by emergent vegetation? - ANS Marshes A large plot of land in a grassland ecosystem was converted for agriculture. After four decades of agricultural use the land was abandoned and began to revert to its original grassland state. This is an example of which of the following? - ANS Secondary succession In what year was the Federal Water Pollution Control Act established? - ANS 1948 Denitrification is an essential step in which of the following cycles? - ANS Nitrogen What is true about chlorophyll? - ANS It is required in order to perform photosynthesis Organisms do NOT require nutrients, or chemical substances, during what phase? - ANS Sleep Organisms require nutrients, or chemical substances, during what phases? - ANS Growth, Maintenance and Reproduction Grasslands are dominated by grasses and several species of forbs. Which of the following best describes a forb? - ANS Broadleaf plants and lower shrub vegetation Grassland Habitat - ANS