BIO 10 SECOND MIDTERM SHORT ANSWER QUESTIONS ABOUT THE PHYTOPLANKTON ARTICLE 1.

Question

BIO 10 SECOND MIDTERM SHORT ANSWER QUESTIONS ABOUT THE PHYTOPLANKTON ARTICLE 1. Most of this article discusses the effects of ocean warming on phytoplankton, and how that warming might decrease the numbers of phytoplankton in the oceans. a. Two of the major types of ocean phytoplankton are diatoms and cyanobacteria. To which of the 5 kingdoms of life we discussed in class do diatoms belong? b. According to this article about what percentage of the world's photosynthesis is performed by phytoplankton? c. According to this article where in the world is ocean warming likely to have the worst effects on life? Why is this part of the world likely lose the species? d. As you go deeper in the oceans the water gets colder. So if the surface ocean water is getting too warm for p why don't they just go deeper in the ocean where it is cooler? OVER FOR MORE QUESTIONS

Explanation / Answer

1. a. Diatoms belong to protist class of 5 kingdom classification. Diatoms are unicellular, eukaryotic algae, hence it comes under protist class while multicellular algae comes under plantae.

b. 50 % (Half of all the photosynthesis on earth)

c.Tropical water (tropical region of the world). Since there mean temperature is already very close to their upper limit.

d. A we go to the deeper level, the availability of sunlight decreases and the phytoplanktons require this sunlight for photosynthesis and also the phytoplanktons absorb CO2 from the outer atmosphere.

2. Phytoplankton play a vital role by serving as the base of the ocean's food chain. They are the first course in the marine world's buffet and provide food for another type of plankton - the animal like zooplankton. The zooplankton then eaten by theeir largest neighbors - and so on upto the shark, whales and the like. Hence if the number of phytoplanktons falls significantly, the number of fishes (dependent on zooplankton) will decrease significantly which will affect the whole ecosystem of the world and ultimately human beings will suffer.

3. Phytoplanktons depends on photosynthesis and photosynthesis requires CO2 from outer atmosphere so if the no. of phytoplanktons decreases the level of CO2 will increase in the outer atmosphere which is the major cause of global warming. Hence, ultimately human beings will suffer.

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