Which of the following statements is correct? see concept 32.4 (page 680) view available hint(s) which of the following statements is correct? see concept 32.4 (page 680) the origin of all extant animal phyla can be traced to the cambrian explosion. sponges are diploblastic animals. all animals share a common ancestor. eumetazoans have three embryonic tissue layers. most animal phyla belong to the clade radiata.

All animals share a common ancestor.

Explanation:

All living organisms including animals have evolved from common ancestral organism. It is evident from various researches in relation evolutionary diversification of species.  The process by which numerous variety of species are formed from a common ancestor is known as speciation. The attached diagram showing the phylogeny tree of life is a solid evidence of common ancestral origin of life.

hey bro i looked it up on google the structure of the eye-spot in euglena viridie, e. ehrenbergii, and phacus pyriyorme is not as franzé haa described it. the so-called “crystal body” and “lens bodies” were not found in any of the individuals of the species examined by me. as earlier observers have stated, the eye-spot consists simply of a mass of pigment granules arranged in a single layer, and probably embedded in a protoplasmic framework, but the latter could not be seen, and its presence was only inferred from the fact that the pigment granules must be held together in some way, thd the eye-spot as a whole is capable of expansion, and that the pigment granules can be separated from each other.

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