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Are bivalves protosomes or deuterostomes?
Protostomes .
What are the characteristics of platyhelminthes?
•Bilateral symmetry.•Protosomes.•Do not have an anus, but possess a mouth.•Contain a hydrostatic skeleton.•Mostly sexual reproduction.•4 Classes - Monogenea, Trematoda, Turbellaria & Cestodes.•Examples - tapeworms, flatworms, roundworms. •Sac Body Plan - one opening that functions as the mouth and anus.•3 germ layers.•Live in fresh water, ocean biome, or a moist environment.•
What are the 3 types of micro organisms?
The three main types of microbes are fungi, bacteria and viruses. Bacteria are usually smaller than fungi and virus is the smallest type of microbe.
Is a lizard a deuterostome or protostome?
Protostomes. Development begins with spiral, determinate cleavage. Coelom formation then begins in the gastrula stage, the coelom forming from splits in the mesoderm. The mouth then develops from the first opening, the blastopore, and the anus develops secondarily.
Compare and contrast protostomes and deuterostomes?
The difference between protostomes and deuterostomes can first be analyzed within embryonic development. During development, an opening on the surface of the embryo will eventually connect to the the developing gut, which is called the archenteron, to the outside environment. The opening on the surface of the embryo is called the blastopore. Later on, a second opening at the opposite end of the embryo turns the pouch-like gut into a digestive tube. In protosomes, the blastopore develops into the mouth and the second opening forms the anus. In deuterostomes, the blastopore develops into the anus and the second opening forms the mouth.Also, examples of protostomes are mollusks and examples of deuterostomes would be us!!this is a good answer, but here is more info...for protostomes, During early cell divisions the cells almost immediately become determined, which means it differentiates what it becomes in the organ while Deuterostomes are not cell specific. so protostomes have determinate cleavage while deuterostomes have indeterminate cleavage.deuterostomes also usually are Cnidaria and Echinodermata and they show radial symmetry.In most protostome animals with a true coelom, the body cavity originates as a split within a bud of mesodermal tissue at the time of gastrulation. This method of coelom formation is termed schizocoelous , and occurs in animals like segmented worms and mollusks. In most deuterostome animals the coelom originates from an outpocketing of the archenterons during gastrulation. This method of coelom formation is called enterocoelous.
