grade 11 (support)

1. Most animal species are __________________, which means they do not have a backbone.

• vertebrates
• mammals
• reptiles
• invertebrates

1. An ____________________________ is a hard or tough outer covering that supports and protects invertebrates.

• endoskeleton
• shell
• carapace
• exoskeleton

1. Animals with an endoskeleton that grows with them are called _____________.

• invertebrates
• vertebrates
• mollusks
• arthropods

1. Invertebrates with exoskeletons must _____________ their coverings as they grow.

• shed

• repair
• shrink
• grow

1. Animals that have both an endoskeleton and a backbone are ________

• arthropods
• mollusks
• vertebrates
• invertebrates