Question

Tranverse groove present in dinoflagellates is?

• A. Sulcus
• B. Cingulum
• C. Annulus
• D. Both (b) and (c)

Answer 1

The correct option is D Both (b) and (c)

D. Both (b) and (c)

Reason: Dinoflagellates are unicellular photosynthetic organisms which contains both transverse and longitudinal flagellum. The cells of dinoflagellate are generally covered by theca or lorica. It is the part of a complex covering called the amphiesma. Theca contains two grooves, the longitudinal groove called sulcus and transverse groove known as cingulum or annulus or girdle. So the correct option is D.