A sample quiz 2 on plants and nitrogen, photosynthesis, and wheat production

 

Each question is worth 2.5 points

1.  Match the ploidy levels with these wheats (there will be more than one wheat for one of the ploidy levels).

     2x         hard red winter wheat

     4x         wild relatives of wheat

     6x         durum or pasta wheat

                 bread wheat

 

2.  Which of the following is not necessary for biological nitrogen fixation by legumes?

    a. N2 , b. rhizobium bacteria, c. energy from photosynthesis, d. NH3, e. nodules

 

3.  The percentage of the atmosphere that is nitrogen gas is approximately: 

        a. 0.78, b. 7.8, c. 68, d. 87, e. 78.

 

4.    The photosynthetic enzyme that makes C4 plant more efficient at carbon fixation than C3 plants is:

         a. PEP carboxylase, b. RUBP carboxylase, c. nitrogenase, d. ATPase, e. trypsin

 

5.    C4 plants are found more frequently in what regions: 

        a. arctic, b. tropical, c. temperate, d. desert, e. forest

 

6.    In regards to nitrogen efficiency, C3 plants compared to C4 plants are: 

        a. less efficient in N utilization than C4, b. similar to C4, c. More efficient in N utilization than C4.

 

7.    Select the incorrect statement regarding the CO2 content of the atmosphere: 

a. is currently about 350 ppm,  b. has steadily increased in the past century; c. increases in CO2 are thought to contribute to global warming, d. is related to the increased use of fossil fuels.  e. increasing CO2 levels should result in decreased photosynthesis.

 

8.    The proteins in bread wheat that trap gas from yeast or chemicals and cause bread to rise are called: 

        (a) phasoelins, (b) ubiquitin, (c) ricin, (d) glutenin, (e) glycogen.

 

9.    The primary wheat type grown in the southeastern US is:

        (a) hard red winter, (b) hard white, (c) soft red winter, (d) hard red spring, (e) soft white.

 

10.    The USA is one of the world’s top three wheat producing countries. Select the group below which contains the other two. 

        (a) India and China, (b) India and Canada, (c) France and Ukraine, (d) Canada and Australia, 

        (e) China and Russian Federation.

 

11. 1 pt. bonus. The number of chromosomes per genome in the wheats is:

        a. 28, b. 21, c. 42, d. 14, e. 7.