Base your answers to the following questions on the lake ecosystem represented below and on your knowledge of biology. Identify one organism represented in the diagram that provides the vital link for the transfer 43. of energy from the Sun to the other organisms in the ecosystem. [1] Identify one predator/prey relationship that may occur in this ecosystem. [1] 44. one piece of evidence from the diagram that indicates that light penetrates to the 45. bottom of the lake. [1] Identify the type of organism that is not visible in the diagram but must be present in this 46. ecosystem to recycle the remains of dead organisms. [1] A stable pond ecosystem would not contain 65. materials cycled (1) oxygen (2) decomposers (3) more consumers than producers (4) In an ecosystem, the growth and survival of organisms are dependent on the availability of 8. the energy from the Sun. This energy is available to organisms in the ecosystem because producers have the ability to store energy from light in organic molecules (1) consumers have the ability to transfer chemical energy stored in bonds to plants (2) all organisms in a food web have the ability to use light energy (3) all organisms in a food web feed on autotrophs (4) factor has the greatest influence on the type of ecosystem that will form in a particular 9. geographic area? genetic variations in the animals (1) climate conditions (2) number of carnivores (3) percentage of nitrogen gas in the atmosphere (4) Farming reduces the natural biodiversity of an area, yet farms are necessary to feed the 10. world’s human population. This situation is an example of poor land use (1) a trade-off (2) conservation (3) a technological fix (4) A food chain is represented below. 11. This food chain contains 4 consumers and no producers (1) 1 predator, 1 parasite, and 2 producers (2)
Base your answers to the following questions on the lake ecosystem represented below and on your knowledge of biology. 43. 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] 44. Identify one predator/prey relationship that may occur in this ecosystem. [1] 45. one piece of evidence from the diagram that indicates that light penetrates to the bottom of the lake. [1] 46. 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] 65. A stable pond ecosystem would not contain (1) materials cycled (2) oxygen (3) decomposers (4) more consumers than producers 8. In an ecosystem, the growth and survival of organisms are dependent on the availability of the energy from the Sun. This energy is available to organisms in the ecosystem because (1) producers have the ability to store energy from light in organic molecules (2) consumers have the ability to transfer chemical energy stored in bonds to plants (3) all organisms in a food web have the ability to use light energy (4) all organisms in a food web feed on autotrophs 9. factor has the greatest influence on the type of ecosystem that will form in a particular geographic area? (1) genetic variations in the animals (2) climate conditions (3) number of carnivores (4) percentage of nitrogen gas in the atmosphere 10. Farming reduces the natural biodiversity of an area, yet farms are necessary to feed the world’s human population. This situation is an example of (1) poor land use (2) a trade-off (3) conservation (4) a technological fix 11. A food chain is represented below. This food chain contains (1) 4 consumers and no producers (2) 1 predator, 1 parasite, and 2 producers
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