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JAMB Biology 1980 Question 2

Question 2

Viruses, Monera, Protista and Fungi

One of the following statements is NOT true of Spirogyra.

  1. A.It is a simple multicellular plant
  2. B.During conjugation, its gametes, which are structurally and physiologically similar, fuse to form a zygote
  3. C.It possesses spiral chloroplast which enables the plant to photosynthesize
  4. D.Its cells are protected externally by a layer of mucilage
  5. E.There are pyrenoids along the chloroplast.
Show the answer and explanation

Answer: B (During conjugation, its gametes, which are structurally and physiologically similar, fuse to form a zygote)

Explanation

Spirogyra is a simple multicellular, filamentous green alga, so A is true. During conjugation the two gametes look alike, but one moves through the conjugation tube while the other stays still, so they are not physiologically similar: statement B is the one that is not true.