Phylum Arthropoda, Mollusca, Echinodermata -3rd Q

These are covered with exoskeleton that must be shed or molt as they grow.

• Mollusks

• Echinoderms

• Athropods

They have soft body that is protected by a hard shell.

• Mollusks

• Echinoderms

• Athropods

These have endoskeleton and spines all over their body.

These have endoskeleton and spines all over their body.

Mollusks have segmented body and jointed appendages.

• TRUE

• FALSE

Answer explanation

ARTHROPODS have segmented body and jointed appendages.

Crustaceans are animals enveloped by a ___________, which is an external skeleton that covers their body.

What is a characteristic of the CLASS CHILOPODA?

• Animals with a cylindrical body divided into segments which has 2 pairs of legs

• Animals with a flattened body divided into segments which has 2 pairs of legs

• Animals with a body divided into head, thorax and abdomen

• Animals with a flattened body divided into segments which has 1 pair of legs

• Animals which has 8 pairs of legs

CLASS _____ are animals which have cylindrical body divided into segments each of which has 2 pairs of legs

Class Insecta have six pair of legs

• TRUE

• FALSE

Answer explanation

Class Insecta have SIX LEGS (not six pairs)

Class insecta's body is divided into these parts:

• Head, thorax, and abdomen
• Head, thorax, and thorax
• Head, thorax, and legs
• Head, abdomen, and wings