Invertebrates

Front

What is the phylum that contains the simplest animals with no symmetry and no organs?

Back

Porifera

Front

What conclusion can be drawn about corals in mangrove habitats compared to those in reefs?

Back

Corals in mangrove habitats have a higher average number of polyps than in reefs.

Front

What characteristic do all invertebrates share?

Back

Lack of a vertebral column (no backbone)

Front

Which of the following is NOT a characteristic typically associated with molluscs?

Back

Segmented bodies

Front

According to phylogenetic trees, which invertebrate phylum shares a most recent common ancestor with chordata (vertebrates)?

Back

Echinodermata

Front

What is the primary body structure that distinguishes arthropods from other invertebrates?

Back

Exoskeleton

Front

What is the function of the radula in molluscs?

Back

It is a tongue-like organ used for feeding.

Front

What type of symmetry do cnidarians exhibit?

Back

Radial symmetry

Front

What is the main characteristic of annelids?

Back

Segmented bodies

Front

What is the primary habitat for most echinoderms?

Back

Marine environments