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I think the leech has Bilateral symmetry meaning that if you cut it down the middle you will get two mirror images.
The answer is probably sponges.
No, crayfish are not members of the superfamily called the Deuterostomes. They belong to the superfamilies' Parastacoidea and Astacoidea.
botany and zoology
A kingdom contains similar phyla.
Arthropoda and Heterokontophyta
Two other phyla members of a roundworm are Nematoda and Nematomorpha. They are both non-segmented worms that belong to the superphylum Ecdysozoa along with roundworms (phylum Rotifera).
True crabs and centipeds
They belong to the phyla Platyhelminthes, along with the flatworms. Members in this phyla are acoelomates.
porifera
leech
this is stupid
asconoid sponges, and syconoid
Cnidaria and Ctenophora are the two phyla that are diploblastic, meaning they have two germ layers during embryonic development – the ectoderm and endoderm.
sea star and ocean fish star
Porifera (sponges) have no specialized cells. To be diploblastic animal phyla must have a minimum of two cell layers referred to as ectoderm and endoderm. The absence of these cell types make it impossible for any members of porifera to be diploblastic.
There are more than two phyla in the animal kingdom... There are many phyla in the animal kingdom. There are a few phyla of worms and other invertebrates and then you have the vertebrate ohyla. Unless that's what your asking? Did you want the invertebrate and vertebrate in general phyla? That's the only set of 2 things I can think of.