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.
Which of the following options correctly represents A, B, C and D.

• A. A- Cnidoblasts, B- Cellular level of organisation, C- sea fan, D- Bilateral symmetry
• B. A- Nematocytes, B- Tissue level of organisation, C- sea pen, 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.