Ecology B/C

[kate!]

Questions (Click to Show Hidden Text)

1. How are edaphic savannas formed, and what is one example of an edaphic savanna?
2. Chlorofluorocarbons are responsible for the degradation of which atmospheric layer?
3. Referring to the previous question, which treaty sought to fix that damage?
4. Again referring to question two, this caused a "hole" over which continent?

1. Edaphic savannas are created by soil conditions. An example is a savanna in Nigeria (not sure about this??)
2. The ozone layer.
3. The Montreal Protocol?
4. Antartica

[Fridaychimp]

Questions (Click to Show Hidden Text)

1. How are edaphic savannas formed, and what is one example of an edaphic savanna?
2. Chlorofluorocarbons are responsible for the degradation of which atmospheric layer?
3. Referring to the previous question, which treaty sought to fix that damage?
4. Again referring to question two, this caused a "hole" over which continent?

1. Edaphic savannas are created by soil conditions. An example is a savanna in Nigeria (not sure about this??)
2. The ozone layer.
3. The Montreal Protocol?
4. Antartica

Nice job! Your turn.

[kate!]

questions (Click to Show Hidden Text)

1. Name the 3 largest grasslands.
2. What is an example of a biological hotspot?
3. Are point source or non point source pollutants more common and why?

[MattChina]

questions (Click to Show Hidden Text)

1. Name the 3 largest grasslands.
2. What is an example of a biological hotspot?
3. Are point source or non point source pollutants more common and why?

answers (Click to Show Hidden Text)

1. Nagqu, Great Plains, Canadian Praries
2. Carribean islands
3. Non-point source because they come from many different places?

[kate!]

questions (Click to Show Hidden Text)

1. Name the 3 largest grasslands.
2. What is an example of a biological hotspot?
3. Are point source or non point source pollutants more common and why?

answers (Click to Show Hidden Text)

1. Nagqu, Great Plains, Canadian Praries
2. Carribean islands
3. Non-point source because they come from many different places?

Correct, your turn!

[MattChina]

Questions (Click to Show Hidden Text)

1. Explain the importance of CAM pathway in desert plants and their ability to survive. 
2. Name all the steps in the CAM pathway.
3. Name 2 natural producers of sulfur dioxide.

[kate!]

Questions (Click to Show Hidden Text)

1. Explain the importance of CAM pathway in desert plants and their ability to survive. 
2. Name all the steps in the CAM pathway.
3. Name 2 natural producers of sulfur dioxide.

answersss (Click to Show Hidden Text)

1. The CAM pathway leaves stomata closed during the day to reduce evapotranspiration and opens them during the night to take in carbon dioxide. This helps the plants retain water.
2. In case you think this is wrong, I got it from http://lifeofplant.blogspot.com/2011/10/c4-and-cam-photosynthesis.html.
a) At night, carbon dioxide diffuses into the leaf and its mesophyll cells.
b) It becomes fixed by the C4 enzyme PEP carboxylase.
c) The product is transformed into malic acid and stored in the cell's vacuoles until daylight.
d) The vacuole fills up a few hours before daylight, and malic acid accumulates in the cytoplasm outside the vacuole.
e) The pH of the cytoplasm turns acidic, and the enzyme stops functioning for the rest of the night.
f) When the sun rises and the stomata closes, carbon dioxide will be photosynthesized into the atmophere and out of the leaf.
g) Next, the malic acid leaves the vacuole and enters the cytoplasm. 
h) It's broken down, and the carbon dioxide enters the chloroplast and is photosynthesized.
3. Volcanoes and hot springs.

[MattChina]

Questions (Click to Show Hidden Text)

1. Explain the importance of CAM pathway in desert plants and their ability to survive. 
2. Name all the steps in the CAM pathway.
3. Name 2 natural producers of sulfur dioxide.

answersss (Click to Show Hidden Text)

1. The CAM pathway leaves stomata closed during the day to reduce evapotranspiration and opens them during the night to take in carbon dioxide. This helps the plants retain water.
2. In case you think this is wrong, I got it from http://lifeofplant.blogspot.com/2011/10/c4-and-cam-photosynthesis.html.
a) At night, carbon dioxide diffuses into the leaf and its mesophyll cells.
b) It becomes fixed by the C4 enzyme PEP carboxylase.
c) The product is transformed into malic acid and stored in the cell's vacuoles until daylight.
d) The vacuole fills up a few hours before daylight, and malic acid accumulates in the cytoplasm outside the vacuole.
e) The pH of the cytoplasm turns acidic, and the enzyme stops functioning for the rest of the night.
f) When the sun rises and the stomata closes, carbon dioxide will be photosynthesized into the atmophere and out of the leaf.
g) Next, the malic acid leaves the vacuole and enters the cytoplasm. 
h) It's broken down, and the carbon dioxide enters the chloroplast and is photosynthesized.
3. Volcanoes and hot springs.

Yeah its right

[kate!]

questions (Click to Show Hidden Text)

1. Define and give 2 examples of a biological hotspot.
2. How are the three types of savannas (edaphic, derived, climatic) different?
3. Why is the Atacama the driest non-polar desert?
4. What are 3 ways to remove invasive plant species?
5. If you are MattChina, what the heck is up with your signature??

[MattChina]

questions (Click to Show Hidden Text)

1. Define and give 2 examples of a biological hotspot.
2. How are the three types of savannas (edaphic, derived, climatic) different?
3. Why is the Atacama the driest non-polar desert?
4. What are 3 ways to remove invasive plant species?
5. If you are MattChina, what the heck is up with your signature??

answers (Click to Show Hidden Text)

1. Tropical Andes and Mediterranean Basin
2. The way they are formed
3. Ocean currents, dry winds, rain shadow effect 
4. prescribed fire, herbicides and flooding
5. moisty *slurp slurp