Invertebrate Zoology Lecture Notes Ppt New Repack Jun 2026

Asteroidea : Sea stars; broad arms merged smoothly into a central disc; can regenerate lost limbs.

Flatworms are triploblastic, acoelomate, and bilaterally symmetrical. Their bodies are flattened top-to-bottom. invertebrate zoology lecture notes ppt new

Cubozoa : Box jellyfish; advanced vision with complex eyes, highly toxic venom. Asteroidea : Sea stars; broad arms merged smoothly

Coelomate / Eucoelomate : Cavity completely lined by mesoderm (e.g., annelids, mollusks). Module 2: The Non-Bilaterians (Basal Metazoans) Phylum Porifera (Sponges) Cubozoa : Box jellyfish; advanced vision with complex

Hexapoda : Insects. Three-part body plan (head, thorax, abdomen), three pairs of walking legs attached to the thorax, and frequently one or two pairs of wings. They undergo either incomplete transformation ( development) or complete transformation ( holometabolous development with a distinct pupal stage). Module 5: Deuterostome Invertebrates

Mostly aquatic. Two pairs of antennae. Biramous (branched) appendages.

Echinoderms are deuterostomes. They share a close evolutionary link with chordates despite their simple appearance.