A) Cytoplasm
B) Nucleus
C) Rhizoid and stalk
D) Gametes
Correct Answer: C
Solution :
J. Hammerling (1934) conducted experiments using two species of green algae Acetabularia crenulata and A. mediterranei. They differ in the shapes of their caps. The nucleus in both species is situated in rhizoid at the bottom of the stalk. If after re- moving cap, the stalk of one species is grafted on rhizoid of the other species, shape of the cap will be determined by the nucleus, not by the stalk. This experiment makes clear that the characters of an individual are controlled by nucleus. Hence, the correct option is [c].
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