Marine Science-Ch. 8 Multicellular Primary Producers

Front

What is the essential photosynthetic pigment in almost all photosynthetic organisms?

Back

Chlorophyll is the primary pigment responsible for photosynthesis in plants, algae, and cyanobacteria.

Front

What are the root-like structures of seaweed called?

Back

Holdfasts are structures that anchor seaweed to the substrate, similar to roots in land plants.

Front

What type of seedlings do mangrove trees produce?

Back

Mangrove trees produce pencil-shaped seedlings that can stick in the mud, allowing them to establish in coastal environments.

Front

What is the gelatinous substance from seaweeds used in food processing?

Back

Phycocolloids are gelatinous substances derived from seaweeds, commonly used as thickening agents in food.

Front

Which substance is used in healthcare and science to grow microorganisms in petri dishes?

Back

Agar is a gelatinous substance derived from red algae, used as a culture medium for growing microorganisms.

Front

What is the main function of chlorophyll in photosynthesis?

Back

Chlorophyll absorbs light energy, primarily from the sun, and converts it into chemical energy during photosynthesis.

Front

What are the main types of multicellular primary producers in marine environments?

Back

The main types include seaweeds (macroalgae), seagrasses, and mangroves.

Front

What role do seagrasses play in marine ecosystems?

Back

Seagrasses provide habitat and food for marine life, stabilize sediments, and improve water quality.

Front

What is the difference between macroalgae and microalgae?

Back

Macroalgae are large, multicellular algae (like seaweeds), while microalgae are microscopic, single-celled organisms.

Front

What are the three main groups of seaweeds based on their pigment composition?

Back

The three main groups are green algae (Chlorophyta), brown algae (Phaeophyta), and red algae (Rhodophyta).