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Living Environment Homework / Mr. Gil Name: ________________________________ Family: ________ Date: Monday 2/2/15 Answer the following Questions: 1. Which statement about the pyramid of energy shown below is correct? (1) The amount of energy needed to sustain the pyramid enters at level D. (2) The total amount of energy decreases with each successive feeding level from D to A. (3) The amount of energy is identical in each level of the pyramid. (4) The total amount of energy at level D is less than the total amount of energy at level B. 2. The rapid destruction of tropical rain forests may be 4. Some organizations are buying up sections of forest harmful because land. Once purchased, these sections of forest will never (1) removing trees will prevent scientists from studying be cut down. The main reason for protecting these ecological succession sections of forest is to (2) genetic material that may be useful for future (1) cause the extinction of undesirable animal species medical discoveries will be lost (2) prevent these trees from reproducing too fast (3) energy cycling in the environment will stop (3) maintain the diversity of the living environment (4) the removal of trees will limit the construction of (4) provide more land for agricultural purposes factories that will pollute the environment 3. Humans are responsible for some of the negative 5. An established ecosystem may remain stable over changes that occur in nature because they hundreds of years because (1) have encouraged the development of wildlife refuges and parks (1) species interdependence is absent (2) have passed laws to preserve the environment (2) there is a lack of variety in the species (3) are able to preserve scarce resources (3) no competition exists between the species (4) are able to modify habitats more than any other (4) there are natural checks on species species 6. Which of the stages in the diagram below consists of plant species that modify the environment, eventually making it more suitable for another community? (1) grass stage, only (2) grass, shrub, and pine forest stages (3) shrub, pine forest, and hardwood forest stages (4) hardwood forest stage, only Living Environment Homework / Mr. Gil Name: ________________________________ Family: ________ Date: Tuesday 2/3/15 Base your answers to questions 1 through 6 on the lake ecosystem represented below and on your knowledge of biology. 1. Identify one organism represented in the diagram that provides the vital link for the transfer of energy from the Sun to the other organisms in the ecosystem. [1] _____________________________________________________________________ 2. Identify one predator/prey relationship that may occur in this ecosystem. [1] Predator: ____________________________ Prey: ____________________________ 3. State one piece of evidence from the diagram that indicates that light penetrates to the bottom of the lake. [1] _______________________________________________________________________ _______________________________________________________________________ 4. Identify the type of organism that is not visible in the diagram but must be present in this ecosystem to recycle the remains of dead organisms. [1] _________________________________ 5. List 3 abiotic limiting factors from the diagram: _____________________________________________________________________________________________________________
_____________________________________________________ 6. Draw a food chain and with at least 4 organisms from the diagram and construct an energy pyramid with at least 3 trophic levels using organisms from the diagram. Living Environment Homework / Mr. Gil Name: ________________________________ Family: ________ Date: Wednesday 2/4/15 Answer the following questions: 1. Which statement describes all stable ecosystems? (1) Herbivores provide energy for the autotrophs. (2) The populations of predators are dependent on the populations of their prey. (3) The number of autotrophs equals the number of heterotrophs. (4) Consumers synthesize ATP from light energy. 2. The feeding niches of three bird species are shown in the diagram below. 3. Cutting down a rain forest and planting agricultural crops, such as coffee plants, would most likely result in (1) a decrease in biodiversity (2) an increase in the amount of energy recycled (3) a decrease in erosion (4) an increase in the amount of photosynthesis 4. The graph below shows the number of birds in a population. Which statement best explains section X of the graph? What is the advantage of these different feeding niches (1) Interbreeding between members of this population increased the mutation rate. for the birds? (2) An increase in the bird population caused an (1) less competition for food increase in the producer population. (2) fewer abiotic resources for each bird species (3) The population reached a state of dynamic (3) fewer biotic resources for each bird species (4) less energy available as the birds feed higher in the equilibrium due to limiting factors. (4) Another species came to the area and provided food tree for the birds. Base your answers to questions 5 and 6 on the information below and on your knowledge of biology. Our national parks are areas of spectacular beauty. Current laws usually prohibit activities such as hunting, fishing, logging, mining, and drilling for oil and natural gas in these areas. Congress is being asked to change these laws to permit such activities. 5. Choose one of the activities listed above. State one way that activity could harm the ecosystem. Activity: _________________________________________________________________________ Harm: ___________________________________________________________________________ _________________________________________________________________________________ 6. State one way allowing the activity you chose could benefit society. [1] _________________________________________________________________________________ _________________________________________________________________________________ Living Environment Homework / Mr. Gil Name: ________________________________ Family: ________ Date: Thursday 2/5/15 Answer the following questions: 1. Which process provides the initial energy to support all 4. Which statement best describes the fruit fly population the levels in the energy pyramid shown below? in the part of the curve labeled X in the graph shown below? (1) circulation (3) active transport (2) photosynthesis (4) digestion _________________________________________________ 2. Which information concerning a desert is provided by the quotation below? “The desert is arid, with less than 25 cm of rain per year. The plants are spaced far apart, or are grouped around water sources. Most of the animals are active at night.” (1) daily temperature range and types of autotrophs (2) time of rainy season and type of food used by heterotrophs (3) identity of a limiting factor and behavior of heterotrophs (4) type of nutrition in animals and distribution of autotrophs 3. The ecological niches of three bird species are shown in the diagram below. What is the advantage of each bird species having a different niche? (1) The fruit fly population has reached the number of organisms the habitat can support. (2) The fruit fly population can no longer mate and produce fertile offspring. (3) The fruit fly population has an average lifespan of 36 days. (4) The fruit fly population is no longer able to adapt to the changing environmental conditions. 5. Lichens and mosses are the first organisms to grow in an area. Over time, grasses and shrubs will grow where these organisms have been. The grasses and shrubs are able to grow in the area because the lichens and mosses (1) synthesize food needed by producers in the area (2) are at the beginning of every food chain in a community (3) make the environment suitable for complex plants (4) provide the enzymes needed for plant growth _______________________________________________ (1) As the birds feed higher in the tree, available energy increases. (2) More abiotic resources are available for each bird. (3) Predators are less likely to feed on birds in a variety of locations. (4) There is less competition for food. 6. The negative effect humans have on the stability of the environment is most directly linked to an increase in (1) recycling activities by humans (2) supply of finite resources (3) predation and disease (4) human population size ****Note: Thursday night’s HW – Study for the Quiz on Friday!!!