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what does radial symmetry mean what is the type of symmetry found in chordates which are other phyla of the animal kingdom that present species with
what are the main classes into which the phylum is divided what are some examples of each and in which form polyp or medusae are they
what is the name of the larva of corals and sea anemones what is the biological significance of that larval stage sexual reproduction in corals and
in the metagenesis of aurelia and obelia what is the form that produces gametes what is the form that reproduces asexuallyin the metagenesis of some
what is metagenesis what are the other names of this processmetagenesis is the type of life cycle in which there are two dissimilar forms of
what are cnidocytes what is the name of the capsule inside the cnidocyte what are the biological functions of this structurecnidocytes are
what is the type of digestion that occurs in cnidariansthese animals have a digestive cavity and they make intracellular and extracellular digestion
which are the germ layers present in cnidarians which tissues of the animal do they originatethese beings there ectoderm and endoderm two germ layers
concerning tissue complexity how different are cnidarians from poriferanscnidarians have true tissue differentiation they present separate organized
what are the two main morphological patterns of cnidarians concerning locomotion how do these forms differentiate from each othermorphologically
what is the evolutionary advantage of the occurrence of sperm cells and larval stage in the life cycle of spongesthe sexual reproduction in sponges
how are gases exchanged in spongesthe gas exchange in sponges occurs by diffusion from the external to the cells that absorb molecular oxygen and
concerning digestion how are poriferans characterizedsponges are dissimilar from other animals since they present only intracellular digestionthey do
what are the main cells of which poriferans are madesponges have their outer wall covered by flat cells known as pinacocytes and having pores
how do sponges try to protect themselves against harm from the environment is that method efficient or rudimentarysponges can close their pores to
how does water move inside sponges what is the function of the pores in these animals sponges are filtering beings they make water enter their bodies
what is the typical shape of poriferanssponges have bodies in the type of tubular vases or globes open in the upper extremity they have an internal
what is an evolutionary tree is there a precise evolutionary tree known by science that explains the emergence and origin of every type of living
what are the differences between vertebrates and the other chordatesvertebrates are dissimilar because they have a spinal column vertebral column in
what are the two mains divisions of the chordate phylum chordates are separated into protochordates cephalochordates and urochordates and
which are the beings that form the kingdom animalia what are the two big groups into which this kingdom is dividedthe kingdom animalia is the animal
according to cellular organization how are living beings divided into two groupscellular beings are separated into two groups the prokaryotes
what are the five kingdoms into which living beings are divided which group of living being is out of this classificationthe five kingdoms of living
what is meant by binomial nomenclature and what are its basic rulesscientific nomenclature of a species must have at least two names one that
what is crystallization of a virus what is the importance of this processcrystallization is the method of transformation of viral components into