Unit 4 Study Guide Part 2

The fires of California, 2025 ravaged the ecosystem, causing a significant decline in biodiversity. What plant life would you expect to find in 2045?

• grasses

• bare rock

• mature oak and hickory forest

• shrubs and briarsshrubs, pines, young oak and hickory

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Organisms living in a forest ecosystem rely on carbon dioxide and water to create high-energy sugars and oxygen. What other source is needed for this process to occur?

• Carbohydrates

• Sunlight

• Mitochondria

• Nucleus

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What percentage of offspring from this cross are Black?

• 0%

• 25%

• 50%

• 100%

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Which of the following organisms would be placed near or at the top of the pyramid?

• Grass

• Bees

• Snake

• Bird

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What is the most likely reason that explains the death of the freshwater fish in saltwater?

• The fish had no organisms to eat.

• The fish became severely dehydrated (shrunken) due to osmosis.

• The fish ate all of the plants in the tank, so no oxygen.

• The fish swelled up and died due to taking in too much water

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Which of the following is an effect of deforestation? Select Two.

• Increase in oxygen

• Decrease in carbon dioxide

• Loss of sea ice

• Climate Change

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Which of the following is NOT an example of an organism that transfers energy to the hawk?

• Rabbit

• Owl

• Snake

• Mouse

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Which of the following would be true about the progression of ecological succession?

• Annual plants have a shorter life cycle and help to soften up the soil for bigger perennial plants and grasses root systems to grow.

• Annual plants have deeper roots compared to perennials, so they can grow and complete their life cycle before perennials and grasses take over.

• Annual plants require more sunlight than perennials, so they can grow and complete their life cycle before perennials and grasses take over.

• Annual plants have a longer life cycle compared to perennials, so they can grow and complete their life cycle before perennials and grasses take over.

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The image shows the burning of fossil fuels that release harmful gases in the air such as carbon dioxide. Which of the following are negative factors that are caused by the burning of fossil fuels?

• recycling materials

• maintaining the ozone shield

• protecting wildlife

• Release of greenhouse gases into the atmosphere.

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What changes would occur if a herbivore migrated to this ecosytem? Select Two.

• Frogs will increase

• 
  Greenfly, Grasshoppers, and Butterflies will decrease

• Frogs will decrease

• No change will occur

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