Which of the following animals has an exoskeleton?

What type of body plan does a house cat have?

Which of the following is not a characteristic of an animal?

Most animals are what?

Which of the following is a significant difference between sponges and other animals?

Sponges are hermaphroditic, which means that sponges:

The phylum Cnidaria is named for the cnidocytes found in these organisms. Cnidocytes are specialized _____ cells.

Cnidarians exist in one of two forms, as either a ____ or ____

Animals with radial symmetry can be divided into left and right halves by a line through their center.

All animals are heterotrophic.

Animals have cell walls made of starch.

All animals have some kind of circulation to provide nutrients to all their cells.

Most animals reproduce sexually, but some can reproduce asexually.

The walls of a sponge's body are supported by the fluid pressure within the sponge's pores.

Sponges feed by trapping food particles carried by water currents through the sponge's pores.

Sponges are hermaphroditic, meaning that they have both male and female reproductive structures.

Cnidarians have no nerve tissue.

Many cnidarians have a life history that includes both polyp and medusa forms.

Cnidarians capture their prey with specialized stinging cells called cnidocytes.

Cnidarians that practice sexual reproduction are generally either male or female rather then hermaphroditic.

Reef-building corals live in a symbiotic relationship with algae.

free-swimming adult medusa

internal support in the form of hard spicules

adults are sessile with stone-like protective coating

internal support in the form of hydroskeleton

the primary reef builders

collar cells that engulf food particles

have stinging tentacles

adults sessile, no stone-like protective coating

no germ layers

What is the name of this animal?

What is the name of this animal?

What animal is this?

What animal is this?