Animal Reproduction Crossword Puzzle
QUESTIONS LIST: embryo: is the early stage of development of a multicellular organism. , mesoderm: the middle layer of the three germ layers that develop during gastrulation, copulation: sexual intercourse the reciption of sperm by a female, morula: a solid ball of cells resulting from division of a fertilized ovum, and from which a blastula is formed, zygote: a diploid cell resulting from the fusion of two haploid gametes; a fertilized ovum, acoelomate: an invertebrate lacking a coelom , diploblastic: having a body derived from only two embryonic cell layers (ectoderm and endoderm, but no mesoderm), blastula: hollow sphere of cells, or blastomeres, produced during the development of an embryo by repeated cleavage of a fertilized egg, gastrula: an embryo at the stage following the blastula, when it is a hollow cup-shaped structure having three layers of cells, endoderm:the innermost of the three primary germ layers of an embryo, radial symmetry: the arrangement of body parts around a central axis, like rays on a sun or pieces in a pie. , budding: type of asexual reproduction in which a new organism develops from an outgrowth or bud due to cell division at one particular site, gut: the gastrointestinal tract is the tract from the mouth to the anus which includes all the organs of the digestive system, coelom: the body cavity in metazoans, located between the intestinal canal and the body wall.