Both Echinoderms and Cnidarians are characterised as having three embryonic layers during the early stages of development.Question 14Select one:TrueFalse

The three primary germ layers in a developing human embryo are ectoderm, , and endoderm.

Which of the following is true of Cnidarians?Multiple choice question.They have organs.They have three cell layers.They have distinct tissues.

Which embryonic germ layer(s) give(s) rise to connective tissues?Multiple choice question.The endodermThe mesodermThe endoderm and the ectodermThe mesoderm, the ectoderm, and the endoderm

In the course of embryonic development, the three germ layers -- ectoderm, mesoderm, and endoderm -- give rise to different tissues and organ systems in the body. Which of the following options is formed from the endoderm?Group of answer choicesDigestive tract.Skeletal system and muscle.Heart and blood vessels.Nervous system and skin.

Despite differences, what features are common to bird, mammal, frog, and sea urchin gastrula embryos?Check All That ApplyBlastocoelBlastocoelCell movementsCell movementsDorsal lipDorsal lipMesoderm is internal, between ectoderm and endodermMesoderm is internal, between ectoderm and endodermPrimitive streakPrimitive streakSpherical embryoSpherical embryoThree distinct germ layers are formedThree distinct germ layers are formedYolk