You are watching: The animal phylum most like the protists that gave rise to the animal kingdom is
Porifera.(Evidence that supports this consists of the absence of true organization in sponges and the near similarity between choanocytes and also choanoflagellates.)
Which that the complying with is a properties of cnidarians?- an anus- bilateral symmetry- radula- gastrovascular cavity- mesoderm
Gastrovasicular cavity.(Characterized by a solitary opening, the is the digestive compartment the cnidarians.)
Members of the phylum Mollusca ___.- have tentacles surrounding a main mouth/anus- have actually segmented bodies and also paired, jointed appendages- room filter feeders- are soft-bodied and also often extended by a shell- have closed circulatory systems
Which of the adhering to is true the annelids?- They have actually an open circulatory system.- They have a gastrovascular cavity.- They perform gas exchange throughout their skin.- They have a nerve net.- They have pseudocoeloms.
They carry out gas exchange throughout their skin.(Cutaneous respiration occurs across their skins. Polychaetes have actually lateral extensions, called parapodia, which provide even an ext surface area for cutaneous respiration.)
A maritime biologist dredges up a small animal native the bottom that the ocean. It is uniformly segmented, v short, stiff appendages and also soft, functional skin. It has actually a finish digestive system and a closeup of the door circulatory system, plus multiple true coeloms. Based upon this, you recognize that the pet must it is in a(n) ___.- annelid- roundworm- crustacean- mollusc- lancelet
Which that the following are assumed to it is in most closely related come humans?- snails- ants- jellies- earthworms- sea stars
What evidence argues that vertebrates are an ext closely regarded echinoderms 보다 are any other invertebrate phyla?- mutual patterns of development- mutual morphology- mutual DNA sequences
Shared DNA sequences.(The clade Deuterostomia consisting of chordates - consisting of vertebrates - and echinoderms is identified primarily by DNA similarities. Read around deuterostomes.)
Select the exactly statement(s) about invertebrate taxa.- tapeworms lack a mouth and also gastrovascular cavity- rotifers are smaller sized than numerous protists- ectoprocts lack a distinct head
What structure is responsible for gas exchange in many spiders?- tracheal tubes- chelicerae- the pedipalp- Malpighian tubules- publication lungs
Book lungs.(The considerable surface area of book lungs is a structural adaptation that boosts the exchange the O2 and also CO2 in between the hemolymph and air.)
Some invertebrates integrate morphological simplicity with features of great structural or biochemical complexity. Choose all correct instances of this statement.- Trematodes are acoelomates the have efficient defenses versus attack by your hosts" immune system.- Sponges lack true tissues but have much more variation in cell type than pets in any kind of other phylum.- Cnidarians room diploblasts that create complex, capsule-like organelles.
Trematodes space acoelomates that have reliable defenses against attack by your hosts" immune system. Cnidarians are diploblasts that develop complex, capsule-like organelles.
Which the the complying with combinations the phylum and description is incorrect?- Platyhelminthes-flatworms, gastrovascular cavity, acoelomate- Nematoda-roundworms, pseudocoelomate- Echinodermata-bilateral symmetry together a larva, coelom present- Cnidaria-radial symmetry, polyp and medusa human body forms- Porifera-gastrovascular cavity, coelom present
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