Question 4 -worth 10 marks Based on the textbook readings, explain how the various physical and biological limiting factors discussed in the online PowerPoint presentations relate to the flora/fauna of the following biomes:

Please complete this Assignment after reviewing the content and completing the activities and readings for the Unit 4.

Maximum points for Assignment 4: 39 = 10% of a final grade.

Question 1 – worth 10 marks

1. Using the soil texture triangle below (Figure 5.1), what are the soil texture classes for the following:
   1. 9% sand, 41% silt, 50% clay (1 mark)
   2. 45% sand, 39% silt, 16% clay (1 mark)
   3. 31% sand, 25% silt, 44% clay (1 mark)
   4. 50% sand, 10% silt, 40% clay (1 mark)
   5. 76% sand, 11% silt, 13% clay (1 mark)
2. briefly describe the porosity of each of the soil texture classes in (a.) (5 marks)

 

Figure 5.1 Soil texture triangle. (Source: https://commons.wikimedia.org/wiki/File:SoilTexture_USDA.png)

 

 

Question 2 – worth 9 marks

1. Describe the difference between primary and secondary ecological succession. (3 marks)
2. For the following two scenarios, explain whether they are examples of primary or secondary succession.  Briefly explain your choice.
3. As the shield volcanoes that make up the Hawaiian Islands are formed, vegetation such as grasses and ferns develop on the cooled lava, attracting small herbivores.  (3 marks)
4. A forest fire burns through the boreal forest in northern Manitoba.  After the fire dies out, grasses and then pine trees will grow in the area. (3 marks)

 

Question 3 – worth 10 marks

List at least one (i) primary producer, (ii) herbivore, (iii) omnivore, and (iv) carnivore for each of the following biomes.

1. temperate grassland (2 marks)
2. Mediterranean biome (2 marks)
3. tropical rainforest (2 marks)
4. tundra biome (2 marks)
5. montane forest (2 marks)

 

Question 4 -worth 10 marks

Based on the textbook readings, explain how the various physical and biological limiting factors discussed in the online PowerPoint presentations relate to the flora/fauna of the following biomes:

1. boreal forest (5 marks)
2. tropical savannah (5 marks)