Year 7 Science - Chordates

Multiple Choice

What characteristic gives the group of the chordates their name?

• Nerve cord running down their back

• Endoskeleton

• Exoskeleton

• Umbilical cord

Multiple Choice

True or false? All chordates have bilateral symmetry.

• True

• False

Multiple Choice

True or false? Sea squirts have a backbone.

• True.

• False.

Multiple Choice

True or false? Sea squirts have a nerve cord.

• True.

• False.

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Multiple Choice

This term means that their body temperature varies with the temperature of the water they live in.

• Endothermic

• Ectothermic

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Multiple Select

What is true/correct about chondrichthyes?

• Their skeleton is also made of cartilage.

• Sharks are not part of this group.

• Their common name is cartilaginous fish.

• They have proper jaws and teeth.

Multiple Choice

What makes osteichthyes different from other fish?

• They have fins.

• They have jaws.

• They have bones.

• They have teeth.

Multiple Choice

What information about amphibians is incorrect?

• All amphibians are endothermic.

• Larvae or tadpoles must live in water because they breathe through gills.

• Amphibians also take in oxygen through their skin.

• Their eggs are laid in water.

Multiple Choice

What information about reptiles is incorrect.

• They have a dry, scaly skin.

• They breathe using only their lungs.

• They are endothermic.

• Some give birth to live young.

Fill in the Blanks

Multiple Choice

What information about birds is incorrect?

• They have feathers covering their body and lay hard-shelled eggs.

• All birds can fly.

• Birds are endothermic.

• Some birds can swim.

Multiple Choice

What information about mammals is incorrect?

• They have a body covering of hair.

• They are ectothermic.

• They feed their babies on milk produced by the mother.

Multiple Choice

Which subclass of mammals give birth to a tiny undeveloped young that climbs into the pouch where it is fed on milk. The young marsupial grows and completes its development in the pouch.

• Placentals

• Monotremes

• Marsupials

Multiple Choice

Which subclass of mammals lay eggs.

• Placentals

• Monotremes

• Marsupials

Multiple Choice

Which subclass of mammals nourish the baby inside the mother’s body by a placenta and the baby is born at a developed stage.

• Placentals

• Monotremes

• Marsupials