The phylum with endoderm, mesoderm, and ectoderm is:

A. Cnidaria
B. Porifera
C. Platyhelminthes
D. All of the above

The answer is C- Platy

Answered by juniorsrosie | 2024-06-10

The phylum that includes organisms with endoderm, mesoderm, and ectoderm is c. Platyhelminthes. Organisms in the phylum Cnidaria, such as jellyfish, are diploblastic, meaning they only have two germ layers: the ectoderm and endoderm. Phylum Porifera, which includes sponges, does not have true tissue layers and thus does not have endoderm, mesoderm, or ectoderm. In contrast, Platyhelminthes, also known as flatworms, are triploblastic and have all three germ layers.
Cnidocytes are found in d. phylum Cnidaria. These are specialized stinging cells characteristic of this phylum, used for defense and to capture prey.
As for which of the following gives rise to the skin cells, the correct answer is a. ectoderm. The ectoderm is the outermost of the three primary germ layers in the developing embryo and gives rise to the nervous system and the epidermis, which includes the skin cells.

Answered by qwviolet | 2024-06-24

The phylum that has endoderm, mesoderm, and ectoderm is Platyhelminthes. Cnidaria includes only two germ layers (ectoderm and endoderm), while Porifera does not have distinct germ layers. Therefore, the correct answer is C, Platyhelminthes.
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Answered by qwviolet | 2024-12-23