Eumetazoans [ Choose ] [ Choose ] Have true tissues Lack true tissues Parazoans
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Sri K.
Animals can be categorized into four "Grades" by their morphological features. Which of the following is correct? Parazoa are animals that lack true tissues Eumetazoa are animals that have true tissues The Eumetazoa can be divided into animals with radial symmetry versus animals with bilateral symmetry Animal with bilateral symmetry can be divided into those without a body cavity versus those with a body cavity All of the above are correct Animals can be categorized into four "Grades" by their morphological features. The first Grade divides animals with which of the following characteristics? Body cavity (coelom) from cell masses (Protostomia) versus body cavity from digestive tube (Deuterostomia) Body cavity enclosed by mesoderm (Coelomates) versus no body cavity (Acoelomates) Body cavity enclosed by mesoderm (Coelomates) versus body cavity not enclosed by mesoderm (Pseudocoelomates) Bodies with radial symmetry versus bodies with bilateral symmetry Animals with true tissues versus animals without true tissues
Madhur L.
The Parazoa are distinguished from other animal phyla (Eumetazoa) by ___. A. being haploid dominant B. lacking true tissues C. being radially symmetrical D. having no sexual reproduction E. being diploblastic Almost all of the major animal body plans (phyla) seen today appeared in the fossil record more than 500 million years ago during the ___ period. A. Cambrian B. Cenozoic C. Permian D. Cretaceous E. Carboniferous Ecdysis refers to ___. A. shedding an exoskeleton B. a distinctive type of larval stage C. a specialized feeding structure D. a specialized digestive process E. a specialized process for embryo formation Lophophores are ___. A. a distinctive type of larval stage B. a specialized feeding structure C. shedding an exoskeleton D. a specialized digestive process E. a specialized process for embryo formation Which of the following are protostome features? Mark two this question only. A. spiral, determinate cleavage B. radial, indeterminate cleavage C. enterocoelous (outpocketing) mesoderm formation D. schizocoelous (split ball) mesoderm formation
Adi S.
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