Arthropod and Echinoderm Test

What are echinoderms?

• Echinoderms are benthic animals such as urchins, sea stars, sea cucumbers, sand dollars, brittle stars.

• Echinoderms are a type of flowering plant found in tropical regions.

• Echinoderms are a class of birds known for their colorful feathers.

• Echinoderms are a group of mammals that live in freshwater environments.

Tags

NGSS.MS-LS4-2

Which of the following is a characteristic of echinoderms?

• A) Bilateral symmetry

• B) Pentaradial symmetry

• C) Exoskeleton

• D) No symmetry

Tags

NGSS.MS-LS4-2

What type of skeleton do echinoderms have?

• Internal endoskeleton covered by tissue, with spines or bumps.

• External exoskeleton made of chitin.

• Hydrostatic skeleton with fluid-filled cavities.

• Cartilaginous skeleton similar to sharks.

What does the term 'Echinodermata' mean?

• Spiny skinned

• Soft bodied

• Jointed legs

• Segmented body

Which of the following is NOT an example of an echinoderm?

• A) Sea star

• B) Sea cucumber

• C) Sand dollar

• D) Jellyfish

What is the function of the water vascular system in organisms with tube feet?

• Used for locomotion

• Used for feeding

• Used for respiration

• Used for excretion

How do most echinoderms reproduce?

• Budding

• Spawning

• Fission

• Fragmentation

Tags

NGSS.MS-LS3-2

The body of most echinoderms is made up of how many parts?

• Three

• Five

• Seven

• Nine

How is the arthropod skeleton so flexible?

• Their skeleton is flexible due to unique joint structures.

• Their skeleton is flexible because of a special type of cartilage.

• Their skeleton is flexible because of a lack of bones.

• Their skeleton is flexible due to their muscle arrangement.

Identify the phylum of the organism shown in the image.

Phylum: _______.

• Arthropoda

• Mollusca

• Chordata

• Annelida

Tags

NGSS.MS-LS4-2