Today you will observe several common invertebrates that can be purchased in pet stores. Invertebrates are animals without a backbone. … You will circulate among several stations around your classroom observing earthworms, mealworms, snails, crayfish and crickets.

Do mealworms have backbones?

Today you will observe several common invertebrates that can be purchased in pet stores. Invertebrates are animals without a backbone. … You will circulate among several stations around your classroom observing earthworms, mealworms, snails, crayfish and crickets.

Do mealworms have shells?

Since it has a hard exoskeleton, the worm will need to molt and shed its hard outer shell in order to grow. … A recently molted worm will be soft and white, but the exoskeleton will quickly harden. A mealworm spends its time eating and growing in order to save up energy for the next transformation.