Pseudocoelomate Animals Flashcards
Introduction to pseudocoelomtes Animals?
They lack Peritoneal cavity sac.
They are protostomes.
Bilateral symmetry, and have well developed Organ.
Polyphyletic (evolved from different phylum’s)
Do pseudocoelomtes have pseudocoel?
Yes, and pseudocoel is derived from Blastocoel
Do pseudocoelomtes have epidermis?
Yes, they have syncytial epidermis (one cell have multi nuclei)
Do pseudocoelomtes animals have any organs?
No, they do not have any circulatory or respiratory organs
Do pseudocoelomtes animals have protonephridi?
Yes, all the other pseudocoelomtes animals have Protonephridia only Nematodes don’t have it.
Do pseudocoelomtes animals have cloaca?
Yes they have cloaca and their eggs contain Chitin.
What is cloaca?
Cloaca is a structure where reproductive material and digestive materials comes out,
Ex:- chicken, (there eggs comes out from the same place where poops comes out)
Who have Cloaca?
Female do NOT have Cloaca.
But Male have Cloaca.
What is Eutely in pseudocoelomtes?
Eutely means constant numbers of cells
So, the organism is born with a set of number of cells and it’s gonna die with same number of cells.
For humans I
Eutely is only (Nervous system (Neurons) and Muscular system (muscles), other cell do change)
What digestive system do pseudocoelomtes have?
They have complete digestive system but ACANTHOCEPHALAN don’t have complete digestive system.
