C190 Pre-Assessment Questions & Answers 100% Correct!!

Which item would be classified as biotic? -light -wind -temperature -fungus - ANSWERfungus Which item is an atom? -carbon dioxide -nitrogen -sucrose -methane - ANSWERnitrogen Largemouth bass have recently been introduced into ponds that previously did not contain any large, predatory fish. Which adaptation would help the existing population of small, prey species of fish avoid predation from the largemouth bass? -fins with smaller surface areas -faster average swim speed -more noticeable body coloration -more time actively foraging for food each day - ANSWERfaster average swim speed Western spadefoot toads breed and deposit their fertilized eggs in small, often short-lived ponds. The tadpoles grow in the ponds for a period of time before undergoing a metamorphosis into an adult frog. One unusual characteristic of spadefoot tadpoles is the ability to change body form during development. Normally most tadpoles are herbivorous and feed on plant material. However, when conditions in the ponds suggest they are beginning to dry up (e.g., an increase in water temperature or concentration of organic waste), a small percentage of individuals in the population undergo a dramatic change in body form and habit and begin to eat their competitors. This ability is considered to be advantageous as it both reduces the number of competitors in the pond and speeds up the rate of development of the transformed tadpoles. If global climate change continues (as predicted) to increase the average temperature of habitats around the world, how would populations of spadefoot toads likely evolve in response to an increase in pond temperatures? -Spadefoot toads would likely evolve to lay fewer eggs to try and offset the increase in the mortality rate. -Spadefoot toads would likely evolve to - ANSWERSpadefoot toads would likely evolve to have a higher percentage of toads become carnivorous. Male peacocks compete with one another to mate female peacocks. Males with more