Chordates

What is a notochord?

• A muscular structure at the end of a developing chordate.

• A tube like structure near the brain

• Supports the animal and extends along the upper part of its body

• A spinal chord

What does a nerve chord become?

• Muscle

• Spinal chord

• Pharyngeal Pouch

• Notochord

What is a cartilage?

• Backbone

• Fingertips

• Part of your muscel

• A bone/or a flexible tissue

How long ago did vertebrates live?

• 420 million years ago

• 500 million years ago

• 620 thousand years ago

• 530 thousand years ago

What did invertebrate chordates use pharyngeal pouch for?

• Growing

• Filter feeding

• To get to the spinal chord

• To help develope

What is a vertebrae?

• Part of your stomache

• Supports the muscle and organs

• Part of your bone that is attached to your tissue

• Backbones that are joined by flexible cartilage and protects the spinal chord.

What is the function of the endoskeleton?

• Protects the tissue and bone

• Helps control the muscle

• Controls the bone

• Supports the organs and muscle

When did reptile fossils appear?

• 378 million years ago

• 350 million years ago

• 670 thousand years ago

• 700 thousand years ago

ONE characteristics of Echinoderms

• Notochord

• Spinal chord

• Muscel

• Bone

When did amphibian fossils appear?

• 420 million years ago

• 378 mya.

• 370 mya.

• 689 thousand years ago