Question

Fill in the blanks with appropriate examples.
I. ____A___ are also called as nematocytes.
II. ____B___ is seen in Physalia.
III. Meandrina is also known as ____C___.
IV. ____D____ is found in Aurelia.

Here A to D refers to:

• A. A-Cnidoblasts, B-Cellular level of organisation, C-Sea fan, D-Bilateral symmetry
• B. A-Nematocytes, B-Tissue level, C-Sea pan, D-Radial symmetry
• C. A-Stinging, B-Cellular level of organisation, C-Sea-cucumber, D-Bilateral symmetry
• D. A-Cnidocytes, B-Tissue level of organisation, C-Brain coral, D-Radial symmetry

Answer 1

The correct option is D A-Cnidocytes, B-Tissue level of organisation, C-Brain coral, D-Radial symmetry

Cnidocytes/cnidoblast cells are also called as nematocytes.

Tissue level of organisation is seen in Physalia.

Meandrina is also known as brain coral.

Radial symmetry is found in Aurelia.