Classify the organisms based on the presence or absence of a notochord in their embryonic stage. butterfly squid salmon lizard dandelion only if you are 100% sure

Organisms with notochord: Salmon , Lizard

Organisms without notochord: Butterfly , Squid and dandelion.

Explanation:Notochord is the small cartilage made structure present in embroye which is going to be the part of vertebral column in baby.The animals containing the notochord are known to belong to phylum chordate.Fishes and amphibians are chordates, so salmon and lizard are organisms with notochord.While other three are arthropods, mollusk and anthophyta.

The answer is telescope.