Ecb refers to:
a. a genetically engineered plant that is resistant to insect pests
b. edible corn byproducts
c. an insect pest that reduces corn yield
d. european corn borer
e. c and d
2. how many days are required for a corn seed to become a mature plant with maximum weight kernels ready to be harvested?
a. about 23
b. about 65
c. about 140
d. about 180
3. "bt corn" refers to corn that:
a. has been infested with insect pests
b. has been infected with bacteria
c. is resistant to ecb
d. is not affected by pesticides
4. bt is:
a. a stomach poison produced by bacteria
b. a genetically engineered corn product
c. a bacterium carried by the european corn borer
d. a bacterium that has a gene