Marine Microbes and Macro-Algae

1. An autotrophic bacterium…

• Uses sunlight to make its own food

• Uses chemicals like sulfur to make its own food

• Eats other marine microbes as food

• A.) Uses carbon dioxide as food

A major portion of the free oxygen found in the ocean comes from…

• The atmosphere

• Marine Viruses

• Marine Fungi

• Cyanobacteria

In high numbers which micro-algae causes "red tide"

• diatoms

• dinoflagelletes

• forminiferans

• lichens

The outer shell of a diatom is composed of

• silica

• sand

• dirt

• calcium

1. Algae (also referred to as Seaweed) are not considered plants because:

• They are multicellular

• They have other pigment colors besides green

• They are chemosynthetic instead of photosynthetic

• They don’t have roots, stems or leaves

Which algae helps form coral by consolidation, precipitating calcium carbonate to help cement loose pieces of coral together?

• red algae

• green algae

• brown algae

• zooplankton

What is the phyla name for green algae

• Anthophyta

• Phaeophyta

• Chlorophyta

• Rhodophyta

The phylum name of Brown algae is:

• Chlorophyta

• Rhodophyta

• Phaeophyta

• Anthophyta

The leaf-like portions of the thallus are not true leaves because they lack

• leaves

• chlorophyll

• lack true veins

• lack cells

Name the microbe

• dinoflagellate

• diatom

• kelp

• radiolarian