Question

In which group of eukaryotic organisms will the nuclear membrane remain intact during mitosis?

• A. Seedless plants
• B. Dinoflagellates
• C. Diatoms
• D. Both B and C

Answer 1

Answer: (D)

Both B and C

D. Both B and C

EXPLANATION: Some unicellular eukaryotes undergo so-called closed mitosis, in which the nuclear envelope remains intact. Dinoflagellates and Diatoms are unicellular. Diatoms can take the shape of ribbons, fans, zigzags or stars. Dinoflagellates possess two dissimilar flagella arising from the ventral cell side.