Phyla such as Porifera (sponges) lack organs and have asymmetrical or no specific body symmetry. Another example is Placozoa, which also lack organs and have asymmetrical body shapes.
They belong to the phyla Platyhelminthes, along with the flatworms. Members in this phyla are acoelomates.
Yes
this is stupid
asconoid sponges, and syconoid
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).
All phyla contain invertebrates. The only one that contains vertebrates is the phylum Chordata, but it also contains some invertebrates.
An exoskeleton is an external skeleton that protects and supports the animal's body. Two phyla that have exoskeletons are Arthropoda and Heterokontophyta.
Arthropoda and Heterokontophyta
In the Linnaeus system, organisms within the same class contain similar phyla. Classes are one taxonomic rank above phyla and encompass groups of organisms that share similar characteristics and evolutionary relationships.
sea star and ocean fish star
The members of the group of large mammals are often able to walk with an asymmetrical gait. For example rhinoceroses, elephants and giraffes have this ability.