Are the structures present in the organisms or not? Amswer Yes or No. Structure Claim Squid Earthworm Grasshopper Starfish Lamprey Triploblastic Eucoelomate Deuterostome Limbs External Ear Reproduction Dioecious Lungs Dorsal Nerve Cord Amniotic Egg Placenta Gall Bladder Endoskeleton Lobed Liver Bony Skeleton Swim bladder Metanephric Kidney 3 Semicircular canals Rectal Gland Larynx/Syrinx Tetrapod limbs Double loop circulatory system Feathers/hair Homeothermic Synapsid skull Bony Operculum Muscular Gizzard Mammary Glands Waterproof Skin Closed Circulatory System Claim Squid Earthworm Grasshopper Starfish Lamprey Ventricles Keratin on Digits 4 Chambered Heart Diaphragm Radial Cleavage Paired Kidney Ridges in stomach Spiral valve Lungs honeycombed Bilateral Symmetry Heterodont Dentition Vas deferens present Egg Isolecithal Rotational Cleavage Pharyngeal/branchial pouches Enucleated Red Blood Cells Calcareous shells Cranial nerves present Structure Claim Squid Earthworm Grasshopper Starfish Lamprey Triploblastic Eucoelomate Deuterostome Limbs External Ear Reproduction Dioecious Lungs Dorsal Nerve Cord Amniotic Egg Placenta Gall Bladder Endoskeleton Lobed Liver Bony Skeleton Swim bladder Metanephric Kidney 3 Semicircular canals Rectal Gland Larynx/Syrinx Tetrapod limbs Double loop circulatory system Feathers/hair Homeothermic Synapsid skull Bony Operculum Muscular Gizzard Mammary Glands Waterproof Skin Closed Circulatory System Claim Squid Earthworm Grasshopper Starfish Lamprey Ventricles Keratin on Digits 4 Chambered Heart Diaphragm Radial Cleavage Paired Kidney Ridges in stomach Spiral valve Lungs honeycombed Bilateral Symmetry Heterodont Dentition Vas deferens present Egg Isolecithal Rotational Cleavage Pharyngeal/branchial pouches Enucleated Red Blood Cells Calcareous shells Cranial nerves present Solution Structure Clam Squid Earthworm Grasshopper Starfish Lamprey Triploblastic Yes yes Yes Yes Yes No Eucoelomate Yes Yes Yes No No No Deuterostome No No Yes Yes Yes No.