Invertebrates Flashcards
What can be classifies into different groups?
Invertebrates
What are the different groups of invertebrates?
Poriferans, Cnidarians, Worms, Mollusks, Echinoderms, & Arthropods
What are the simplest invertebrates?
Poriferans or Sponges
These invertebrates belong phylum Porifera. What are these?
Poriferans
What does the word porifera mean?
“pore-bearing”
What is covered with many pores for tiny openings?
Sponge
What are some of the most unusual living thing found on Earth?
Sponges
What are invertebrates animals that usually have no body symmetry and never have tissues of organs?
Sponges
What is the thin, spiny structure that form the skeleton of many sponges?
Spicules
What is composed of many invertebrate animals with brilliant colors and strange shapes?
Cnidarian
What are examples of this phylum?
Jellyfishes, Corals, Hydras, and Sea anemones
These have two basic forms. What are these?
Vase-shaped polyp and Bow-shaped Medusa
What name comes from a Greek word meaning “to sting’?
Cnidaria
What has a hollow central cavity with only one opening called “mouth”?
Cnidaria
What is the special stinging structures that all cnidarians have?
Nematocyst