ECOLOGY HOMEWORK
Vocabulary: Define the terms below and place them in the GLOSSARY section of your reference book for a work grade.
Multiple Choice:
1. A pond community is represented in the diagram. Which term includes the interactions between the organisms of this community and the physical factors of their environment? |
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| 1. population | 3. biotic | |
| 2. ecosystem | 4. competition | |
2. All of Earth's water, land, and atmosphere within which life exists is known as |
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| 1. a population | 3. a biome | |
| 2. a community | 4. the biosphere | |
3. The diagram shows organisms in and around a pond.Which ecological term refers to all the organisms shown in the diagram? |
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| 1. heterotroph | 3. population | |
| 2. community | 4. producer | |
4. An
aquarium ecosystem is shown in the accompanying diagram. |
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| 1. plants and gravel | 3. fish, plants, and snails | |
| 2. fish, water, and snails | 4. water and gravel | |
5. Which statement regarding the ecosystem shown in the diagram is correct? |
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| 1. The community within this ecosystem consists of seven guppies and one catfish. | 3. A population within this ecosystem is the three snails. | |
| 2. The energy source for this ecosystem is the gas from the air stone. | 4. Cycling of materials is not necessary in this self-sustaining ecosystem. | |
6. Fish, plants, snails, and bacteria in an aquarium represent a |
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| 1. community | 3. species | |
| 2. population | 4. biosphere | |
7. The diagram shows a milkweed plant and some of the insects that live on it or visit it. Which term best describes the group of organisms in the diagram? |
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| 1. biosphere | 3. habitat | |
| 2. community | 4. biome | |
8. Which group represents a population? |
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| 1. all the vertebrates living in New York State | 3. all the plant and animal species found in New York State | |
| 2. all the Homo sapiens living in New York State | 4. all the flowering plants found in New York State | |
9. A moss-covered log is overturned by a hungry bear looking for insects to eat. The bear disturbs an ant colony, and some chipmunks leave the hollow log to search for another home in the forest. Which relationship do these organisms have with each other? |
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| 1. They are all of the same species. | 3. They are part of a community. | |
| 2. They all require the same type of food. | 4. They are abiotic factors in a forest. | |
10. Which is an example of an ecosystem? |
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| 1. a population of monarch butterflies | 3. all the abiotic factors found in a field | |
| 2. the interdependent biotic and abiotic components of a pond | 4. all the mammals that live in the Atlantic Ocean | |
11. An example of a population is all the |
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| 1. field mice living in a barn | 3. animals in a barn and their surroundings | |
| 2. field mice and owls living in a barn | 4. animals in a barn and their food | |
12. The diagram shows the general location of some major biomes of the Western Hemisphere. The biorne indicated by letter F is characterized by |
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| 1. heavy rainfall, broad-leaved plants, and rnonkeys | 3. variable rainfall, mosses, and caribou | |
| 2. sparse rainfall, grasses, and leopards | 4. heavy rainfall, conifers, and snakes | |
13. Decomposer bacteria are indicated by letter |
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| 1. A | 3. C | |
| 2. B | 4. D | |
14. The diagram shows a relationship between altitude, latitude, and tree gowth. What is a valid inference that can be made based on this graph? |
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| 1. Deciduous trees cannot grow at an altitude of 5,000 feet. | 3. There is less light available at 10,000 feet than at lower elevations. | |
| 2. The effects of increasing altitude and latitude on tree growth are simflar. | 4. Trees do not grow rapidly in the tropics. | |
Base your answer to questions 15-17 on the information shown and on your knowledge of biology.
|
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| 1. ecological succession, which helps reestablish the pine barrens | 3. increased mutations in the pitch pines | |
| 2. hibernation of the insects in the ground | 4. rapid interbreeding of animal species that survive the fire | |
16. In the pine barrens, pitch pine trees are part of a |
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| 1. tundra biome | 3. climax community | |
| 2. pioneer community | 4. grassland biome | |
17. A pioneer organism in the pine barrens is one that |
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| 1. migrates to a different habitat | 3. burrows out of the ground after the fire is extinguished | |
| 2. is the first to repopulate areas where fire destroyed the vegetation | 4. is destroyed by the fire | |
18. Which organisms would most likely be the pioneer organisms on a newly formed volcanic island? |
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| 1. conifers | 3. deciduous trees | |
| 2. lichens | 4. tall grasses | |
19. Which letter most likely indicates a marine biome? |
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| 1. A | 3. C | |
| 2. B | 4. D | |
20. Which letter most likely indicates a tropical forest biome? |
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| 1. A | 3. C | |
| 2. B | 4. D | |
21. Which is an example of the nutritional pattern of a priimary consumer? |
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| 1. grasshoppers--->lizards | 3. prickly pear cactuses--->desert rats | |
| 2. scorpions--->bacteria | 4. lizards--->roadrunners | |
22. A carnivore in this desert community is represented by the |
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| 1. lizard | 3. yeast | |
| 2. sage | 4. desert rat | |
23. Which title would be most appropriate for a textbook on general ecology? |
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| 1. The Interactions Between Organisms and Their Environment | 3. The Physical and Chemical Properties of Water | |
| 2. The Cell and Its Organelles | 4. The Hereditary Mechanism of Drosophila | |
24. Which group can best be described as a population? |
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| 1. all the honeybees in an orchard | 3. the living and nonliving factors in a meadow | |
| 2. all the plants and animals in a forest | 4. the life in Earth's atmosphere | |
25. Which diagram best represents an ecosystem? |
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| 1. (1) | 3. (3) | |
| 2. (2) | 4. (4) | |
26. A food pyramid is represented by the diagram. Which statement best describes one of the levels of this pyramid? |
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| 1. Level A contains the largest producers in the pyramid. | 3. level C contains the largest group of consumers in the pyramid. | |
| 2. The organisms in level B obtain food directly from level A. | 4. Level D contains the greatest nurnber of heterotrophs in the pyramid. | |
27. In a natural community, all the living things that directly or indirectly affect the environment are known as |
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| 1. pioneer organisms | 3. climatic limitations | |
| 2. secondary consumers | 4. biotic factors | |
28. A fungus is an example of |
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| 1. an herbivore | 3. an autotroph | |
| 2. a saprophyte | 4. an omnivore | |
29. Several years after a building had been tom down and the ground cleared, grasses began to grow in that area. After 10 years, small bushes replaced the grasses. This pattern of plant growth is known as |
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| 1. biological control | 3. land-use management | |
| 2. ecological succession | 4. cover cropping | |
30. In order to preserve the biosphere for future generations, humans must |
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| 1. make use of technology to develop new herbicides | 3. explore ways to drain and fill wetlands along the seacoast | |
| 2. put all wild animals in game preserves | 4. understand how living things interact with their environment | |
31. Which organisms would most likely have a predator-prey relationship? |
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| 1. tapeworm and dog | 3. hawk and mouse | |
| 2. barnacle and whale | 4. rabbit and grass | |
32. Eggs of a wasp species are deposited inside the body of a gypsy moth caterpillar. The wasp eggs hatch into larvae, which feed on and destroy the caterpillar. The relationship that exists between the wasp larvae and the caterpillar is known as |
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| 1. mutualism | 3. commensalism | |
| 2. parasitism | 4. saprophytism | |
33. In the food pyramid represented , which level has the greatest biomass? |
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| 1. eagles | 3. mice | |
| 2. snakes | 4. green plants | |
34. Which factor promotes competition between organisms in an ecosystem? |
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| 1. cycling of minerals | 3. limited resources | |
| 2. decomposition of organic matter | 4. presence of saprophytes | |
35. The diagram shows the general location of some major biomes of the Western Hemisphere. The most stable biome is represented by letter |
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| 1. A | 3. C | |
| 2. B | 4. D | |
36. The diagram shows the general location of some major biomes of the Western Hemisphere. Which type of biome is indicated by letter E? |
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| 1. tundra | 3. grassland | |
| 2. taiga | 4. deciduous forest | |
37. The science of ecology is best defined as the study of |
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| 1. the classification of plants and animals | 3. technology and its effects on society | |
| 2. the interactions of living organisms and their environment | 4. weather and its effects on food production in the ocean | |
38. In the four diagrammatic statements,the arrows should be read as [influences]. For example, A--->B would be read [A influences B] and B<--->B [B influences itself]. Which diagrammatic statement best describes ecology? |
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| 1. 1 | 3. 3 | |
| 2. 2 | 4. 4 | |
39. Which statement is best supported by the diagram of the carbon-oxygen cycle? |
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| 1. Decomposers add oxygen to the atmosphere and remove carbon dioxide. | 3. Producers generate oxygen and utilize carbon dioxide. | |
| 2. Combustion adds oxygen to the atmosphere and removes carbon dioxide. | 4. Consumers generate oxygen and utilize carbon dioxide. | |
40. An owl cannot entirely digest the animals it preys upon. Therefore, each day it expels from its mouth a pellet composed of fur, bones, and sometimes cartilage. By examining owl pellets, ecologists would be able to determine the |
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| 1. consumers that owls prefer | 3. organisms that feed on owls | |
| 2. autotrophs that owls prefer | 4. saprophytes that affect owls | |
41. If birds eat insects that feed on corn, which pyramid level would birds occupy? |
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| 1. A | 3. C | |
| 2. B | 4. D | |
42. In an attempt to prevent certain species from becoming extinct, humans have |
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| 1. placed all endangered species in zoos | 3. increased wildlife management and habitat protection | |
| 2. increased the trapping of predators | 4. attempted to mate organisms from different species to create new and stronger organisms | |
43. All the interacting populations in a given area represent an ecological unit known as a |
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| 1. biosphere | 3. world biome | |
| 2. community | 4. saprophytic relationship | |
44. Which is an abiotic factor that functions as a limiting factor for the autotrophs in the ecosystem shown? |
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| 1. grasshopper | 3. fish | |
| 2. light | 4. hawk | |
45. Which term belongs in box 2? |
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| 1. tropism | 3. saprophytism | |
| 2. gradualism | 4. commensalism | |
46. Which description belongs in box 3? |
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| 1. derives nourishment from human body fluids | 3. stalks, kills, and eats fish in deep ocean environments | |
| 2. feeds on dead animals, assisting in the recycling of nutrients | 4. carries on autotrophic nutrition in the tropical forest biome | |
47. Which group in the food web represented would most likely have the greatest biomass? |
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| 1. corn and oats | 3. mice and rats | |
| 2. hawks and owls | 4. snakes and raccoons | |
48. When animals excrete nitrogenous wastes into the soil, certain soil bacteria convert these wastes into nitrates, which are absorbed by plants. These soil bacteria function as |
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| 1. autotrophs | 3. decomposers | |
| 2. secondary consumers | 4. abiotic factors | |
49. An ecosystem is not considered to be self sustaining if |
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| 1. there is interaction between biotic and abiotic factors | 3. cycling of materials occurs between organisms and their environment | |
| 2. some of its living systems incorporate energy into organic compounds | 4. it lacks a constant supply of energy | |
50. In an ecosystem, symbiotic relationships exist among the |
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| 1. autotrophs, only | 3. biotic factors | |
| 2. heterotrophs, only | 4. abiotic factors | |
51. The stable stage that is established in an area as a result of the process of ecological succession is known as the |
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| 1. heterotroph community | 3. biotic stage | |
| 2. pioneer stage | 4. climax community | |
52. Which statement correctly describes the nutritional role of an organism shown in the diagram? |
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| 1. Organism A is an herbivore. | 3. Organism C is a primary consumer. | |
| 2. Organism B is a decomposer. | 4. Organism D is a producer. | |
53. Which organisms break down chemical substances in the environment, making these substances available for use by other organisms? |
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| 1. producers | 3. herbivores | |
| 2. decomposers | 4. carnivores | |
54. Which group has the greatest biomass? |
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| 1. omnivores | 3. carnivores | |
| 2. herbivores | 4. producers | |
55. According to the diagram, omnivores can be classified as |
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| 1. primary or secondary consumers | 3. secondary consumers, only | |
| 2. primary consumers, only | 4. neither primary nor secondary consumers | |
56. Which statement best describes the pioneer organisms involved in ecological succession? |
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| 1. They do not require sunlight. | 3. They modify the environment. | |
| 2. They are the last organisms to appear. | 4. They are restricted to desert biomes. | |
57. In a swamp ecosystem, the heron and the snapping turtle feed on the same species of minnow. These feeding patterns will most likely result in |
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| 1. ecological succession of plants in the swamp | 3. extinction of the turtle | |
| 2. competition between the heron and the turtle | 4. evolution of a new type of climax fauna | |
58. The type of herbivorous mammals present in a given terrestrial community depends most directly on the |
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| 1. type of plants present | 3. number of decomposers present | |
| 2. amount of nitrogen in the atmosphere | 4. amount of oxygen dissolved in ponds and streams | |
59. Which term would be used to classify the patrons of the restaurant "Chez Rotting Carcass" in the cartoon? |
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| 1. herbivores | 3. scavengers | |
| 2. parasites | 4. saprophytes | |
60. Hawks and owls living in the same area compete for the same type of mouse for food. Which situation would lead to the greatest problem in food supply? |
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| 1. an icrease in the owl population | 3. a decrease in the hawk population | |
| 2. an increase in the mouse population | 4. a decrease in the owl population | |
61. Energy stored in organic molecules is passed from producers to consumers. This statement best describes an event in |
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| 1. the process of photosynthesis | 3. a food chain | |
| 2. natural selection | 4. ecological succession | |
62. Select the type of symbiosis that best identifies the relationship: A tapeworm lives in the digestive tract of a human. |
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| 1. Commensalism | 3. Parasitism | |
| 2. Mutualism | ||
63. Select the type of symbiosis that best identifies the relationship: A flea sucks blood from the skin of a dog. |
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| 1. Commensalism | 3. Parasitism | |
| 2. Mutualism | ||
64. Select the biome that best fits the description: lichens and mosses present; subsoil permanently frozen. |
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| 1. Tundra | 3. Temperate deciduous forest | |
| 2. Taiga | 4. Grassland | |
| 5. Desert | ||
65. Select the biome that best fits the description constant, warm temperature; heavy rainfall. |
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| 1. Tundra | 3. Temperate deciduous forest | |
| 2. Taiga | 4. Grassland | |
| 5. Tropical forest | ||
66. Select the biome that best fits the description: wide variation in daily temperature; little rainfall. |
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| 1. Tundra | 3. Temperate deciduous forest | |
| 2. Taiga | 4. Grassland | |
| 5. Desert | ||
67. Which statement is not a correct description of oceans? |
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| 1. Oceans absorb and hold large quantities of solar heat. | 3. Oceans contain a relatively constant supply of nutrient materials and dissolved salts. | |
| 2. Oceans provide the least stable aquatic environment. | 4. Oceans serve as a habitat for a large number of diverse organisms. | |
68. The diagram represents a pyramid of biomass in an aquatic enviroment. Which statement best explains why mass decreases from one level to the next in this pyramid? |
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| 1. More organisms die at higher levels than at lower levels, resulting in less mass at higher levels. | 3. Energy is lost to the environment at each level, so less mass can be supported at succeedingly higher levels. | |
| 2. When organisms die at higher levels, their remains sink to lower levles, increasing the mass at lower levels. | 4. Organisms decay at each level, and thus less mass can be supported at succeedingly higher levels. | |
69. If two different bird species in the same habitat require the same type of nesting site, both species will most likely |
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| 1. interbreed and share the nesting sites | 3. change their nesting site requirements | |
| 2. compete for the nesting sites | 4. use the nests of other bird species | |
70. The taiga biome is characterized by |
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| 1. long, cold winters; frozen subsoil; and no trees | 3. heavy rainfall, broad-leaved trees, and hot temperatures | |
| 2. cold winters, coniferous trees, and much snow | 4. hot days, cool nights, and little precipitation | |
71. The chart below illustrates some methods of pest control. One likely effect of using these methods of pest control will be to |
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| 1. prevent the extinction of endangered species | 3. reduce pesticide contamination of the environment | |
| 2. increase water pollution | 4. harm the atmosphere | |
| 72. When Mount Saint Helens erupted in 1980, a portion of the surrounding area was covered by lava, which buried all of the vegetation. Four months later,Anaphalis margaritacea plants were found growing out of rock crevices. The beginning of plant regrowth in this area is part of the process known as | ||
| 1. species preservation | 3. biotic competition | |
| 2. organic evolution | 4. ecological succession | |
73. Ecosystems tend to change with time until a stable system is formed. All stable ecosystems are characterized by the presence of |
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| 1. a specific climax vegetation influenced by the climate of the area | 3. fewer primary consumers than secondary consumers in the area | |
| 2. trees as the most abundant autotroph in the area | 4. a larger number of heterotrophs than autotrophs in the area | |
74. Information relating to an ecosystem is contained in the diagram shown. Which information belongs in areas X and Y? |
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| 1. X - biotic factors; Y - abiotic factors | 3. X - abiotic factors; Y - interacting populations | |
| 2. X - ecological relationships; Y - biotic relationships | 4. X - energy flow; Y - biotic factors | |
75. Knowing the type of food consumed by an organism helps to identify the role of the organism in the community. This role is known as its |
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| 1. nesting site | 3. biomass | |
| 2. territorial range | 4. niche | |
76. Base
your answer to the following question on the key shown
and on your knowledge of biology. |
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| 1. + with shrimp; - with parasite | 3. 0 with shrimp; - with parasite | |
| 2. - with shrimp; 0 with parasite | 4. + with shrimp; 0 with parasite | |
77. The graphs show the size of the human population in relation to food production per acre in four different countries over the same period. Which country survived the longest without the need for food imports? |
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| 1. A | 3. C | |
| 2. B | 4. D | |
78. The use of ladybugs and praying mantises to consume insect pests in gardens is an example of |
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| 1. biological control of insect pests | 3. abiotic control of insect pests | |
| 2. exploitation of insect pests | 4. use of biocides to control insect pests | |
79. Which activity would most likely control an insect pest and be the least harmful to the environment? |
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| 1. spraying areas with biocides that affect the insect pest | 3. using traps baited with sex hormones to attract the insect pest | |
| 2. releasing imported insects that prey on the insect pest | 4. eliminating the plants that the insect pest feeds on | |
80. The creation of wildlife refuges and the enforcement of game laws are conservation measures that promote increased |
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| 1. use of biocides | 3. use of biological controls | |
| 2. preservation of species | 4. exploitation of species | |
81. Which human activity would most likely result in the addition of an organism to the endangered species list? |
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| 1. cover cropping | 3. use of erosion controls | |
| 2. use of pollution controls | 4. habitat destruction | |