Lower Marine Invertebrates

Front

What are lower marine invertebrates?

Back

Lower marine invertebrates are animals without a backbone that live in marine environments, including groups like sponges, cnidarians, and mollusks.

Front

What is a symbiotic relationship in marine biology?

Back

A symbiotic relationship is a close interaction between two different species, where at least one benefits. An example is corals and zooxanthellae algae.

Front

What is the primary mode of movement for cephalopods?

Back

Cephalopods primarily move using jet propulsion, which involves expelling water from their bodies.

Front

Define 'sessile' in the context of marine organisms.

Back

Sessile organisms are those that remain fixed in one place and do not move around, such as sponges.

Front

What are the two body forms of cnidarians?

Back

The two body forms of cnidarians are polyp and medusa.

Front

What is a radula?

Back

A radula is a tongue-like structure in some mollusks used to scrape food, particularly plant matter.

Front

Give an example of a cnidarian that has a symbiotic relationship with algae.

Back

Coral is an example of a cnidarian that has a symbiotic relationship with zooxanthellae algae.

Front

What is the function of tentacles in cnidarians?

Back

Tentacles in cnidarians are used for capturing prey and defense.

Front

How do sponges obtain food?

Back

Sponges filter food particles from water that flows through their porous bodies.

Front

What is the significance of zooxanthellae to coral reefs?

Back

Zooxanthellae provide corals with essential nutrients through photosynthesis, which is vital for coral health and reef building.