Name ____________________
/ 22 Marks
Chapter 2 Quiz
1. Complete the Nitrogen cycle. (4)
2. Label the 3 main processes in the nitrogen cycle and define them. (3)
a) Ammonification -
b)
c)
2. Complete the table given below. For the items indicated with (?) put a check mark in the
appropriate cell. (5)
Comparison
Photosynthesis
Respiration
Raw material
Products
Occur in plants (?)
Occur in animals (?)
Energy is released (?)
Energy is needed (?)
Light is required (?)
Chlorophyll needed (?)
3. Find the population growth rate of an area with the population of 200000, use the given data (3)
# of births = 3000
Emigration = 25
Immigration = 2000
# of deaths = 1000
4. What is the difference between open and closed population? Give examples (2)
5. Construct a pyramid of numbers with following organisms and determine how much pesticide
would be found in the organism at each trophic level. For each trophic level give the total amount
of pesticide and the amount found in each organism. (5)
In an aquatic food chain 5000 plankton each received 5 units of a fat soluble pesticide. 200 krill
each ate an equal amount of plankton and in turn were eaten by 10 fish. 2 penguins ate the fish and
were eaten by 1 shark.