Circular root growth tends to _____.

Circular root growth tends to _____.
 
  A) girdle the root system
  B) restrict growth
  C) kill the trees in severe cases
  D) all of the above

Question 2

Scientists have been able to ____ plants using the technique called tissue culture.
 
  A) feed
  B) water
  C) clone
  D) revive

Question 3

Tree trunk wrapping of transplanted trees _____.
 
  A) prevents sunscald
  B) reduces water loss
  C) reduces the chances of pest infestation
  D) all of the above

Question 4

According to legend, who were the first people to use artificial insemination?
 
  A) the Greeks
  B) the Russians
  C) the Chinese
  D) the Arabs

Question 5

In purchasing deciduous trees, bare root trees are transplanted in the _____.
 
  A) spring and late summer
  B) early spring and late fall
  C) early summer and late fall
  D) late spring and early fall