The evolution of flowers and fruit corresponds with the evolution of:
a. double fertilization.
b. seeds.
c. gametophytes.
d. pollen.
e. All of the above are correct.
Ans: a. double fertilization.
You might also like to view...
A microRNA is ________ bases long.
A) 2 or 4 B) 12 or 13 C) 21 or 22 D) 100 or 110
Why do pine trees have two different types of cones?
A) One type produces the gametophyte, the other type produces the sporophyte. B) One type produces ovules, the other type produces pollen. C) One type is produced in the fall, the other type is produced in the spring. D) One type produces seeds, the other type produces fruit.
Which of the following diseases is caused by a spirochete?
a. syphilus b. chlamydia c. strep throat d. botulism
A serum titer involves
A.) serially diluting a serum sample B.) determining the lowest dilution of serum that produces a visible reaction C.) determining the highest dilution of antigen that produces a visible reaction D.) the western blot method