Plant living fossil refers to the ______ plants which cease evolution and live up to now.
A. yang
B. ancient
C. big tree
D. old
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Which flowers are called Gentlemans?
Azalea
B. Chrysanthemum
Camellia
D. Plum
E. orchid
_________________ is the father of hybrid rice in the world.
A. Mr Yuan Long-ping
B. Mr Mo Yan
C. Ms Wu Ming-zhu
D. Ms Tu You-you
Who first described the turning movement？
A. Darwin
B. Darwin and his son
C. Linnaeus
D. Linnaeus and his son
What is double fertilization in angiosperms?
A. One sperm fuses the egg cell
B. Another sperm fuses the central cell
C. One sperm fuses the synergid
D. Another sperm fuses the antipodal cell
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