Multiple choice

Which of the following protists have hypotheca & epitheca?

  1. Diatoms

  2. Dinoflagellates

  3. Euglenoids

  4. Slimemoulds
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A Correct answer
Explanation

 Epitheca: This term is used to refer to both the larger, older valve (epitheca) of the frustule as well as the girdle elements (epicingulum) that are connected with it. Hypotheca: This term is used to refer to the smaller, younger valve (hypotheca) of the frustule as well as the girdle elements (hypocingulum) that are connected with it. Diatoms have hypotheca & epitheca.

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