Africa Storyline Review

Consider the energy pyramid featuring grass, zebras and lions. If there is 12,500,000 kcal of solar energy energy available to the grass, approximately how much energy would be available to the Lion?

(a)  

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Consider the food web shown on the right. Assume that the same amount of solar energy (12,500,000 kcal) is available to the producers as in the previous question. How much energy would be available to the eagle, if the energy pyramid consisted of Prairie Cornflower, Grasshopper, Sparrow and Eagle?

(a)  

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What type of niche partitioning is represented by the two different species of frogs shown in the image to the right?

• Temporal (Time) Partitioning

• Height Partitioning

• Spatial (Space) Partitioning

• Dietary Partitioning

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Would you describe the interactions between zebras, wildebeests, and Thomson’s gazelles as competition or facilitation among species? Support your answer with data from the graph on the right.

Answer explanation

This is considered to be facilitation because the actions of each species helps out the next species that feeds on the grass. This is shown on the graph as the zebra population peaks 1 month after rain, the wildebeest population peaks 3 months after rain and the gazelle peaks 5 months after the rain.

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Based on the data shown on the graph to the right, complete the following question.

List two species that compete with each other for food: ​ ​ (a)   & ​ (b)  

• Cattle
• Grevy's Zebra
• Elephant
• Impala

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Based on the data shown on the graph to the right, complete the following question.

List two species that DO NOT compete with each other for food: ​ ​​ (a)   & ​ ​ (b)  

• Elephant
• Plains Zebra
• Buffalo
• Cattle

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Based on the data shown on the graph to the right, complete the following question.

Which species has the least variety of food in their diet? ​ ​​ ​ (a)  

• Plains Zebra
• Cattle
• Eleophant
• Impala

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Based on the data shown on the graph to the right, complete the following question.

Which species has the greatest variety of food in their diet? ​ ​​ ​ (a)  

• Dik-dik
• Cattle
• Eleophant
• Impala

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Using the information in the data table.

Calculate the amount of Net Energy gained if a sea turtle was to eat 2 fish, 1 jellyfish and 3 squid

(a)  

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What prey species would be the most efficient (greatest net gain) for sea turtles?

• Fish

• Jellyfish

• Squid

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