Marine Organisms: Identifying False Statements

This section evaluates the truthfulness of statements concerning marine organisms, specifically identifying those that are NOT true as indicated by the provided answer.

Statement Evaluation

• Statement 1: Foraminifera are multicellular marine organisms

  This statement is definitively NOT true. Foraminifera are single-celled organisms belonging to the Protista kingdom. They are unicellular, not multicellular.

• Statement 2: Sponges form their spicules with silica

  This statement can be true. Sponges (Phylum Porifera) possess skeletal elements called spicules, which can be composed of silica or calcium carbonate, depending on the species.

• Statement 3: Coccolithophores are sea-surface dwelling organisms

  This statement is true. Coccolithophores are microscopic marine algae (phytoplankton) that live in the upper, sunlit layers of the ocean.

• Statement 4: Species diversity of benthic foraminifera is less than that of planktonic foraminifera

  This statement is NOT true. Generally, benthic (seafloor) environments support greater species diversity than planktonic (water column) environments for many marine taxa, including foraminifera.

Summary of False Statements

The statements identified as NOT true are:

• Foraminifera are multicellular marine organisms.
• Species diversity of benthic foraminifera is less than that of planktonic foraminifera.

These correspond to the first and fourth options provided.