Question

1. choose the best answer. what is a mantle? an organ that helps bivalves bury themselves into the mud or sand of an ocean or lake an organ that helps cephalopods to rip apart their prey a thin membrane that surrounds a mollusks internal organs an organ that pumps blood throughout a well - developed circulatory system 5. select 3 that apply. most animals develop from what embryonic tissues? select all that apply. ectoderm endoderm mesoderm gastrula exosderm coelom

Explanation:

In mollusks, the mantle is a thin membrane that surrounds the internal organs. Most animals develop from three primary embryonic tissues: ectoderm, endoderm, and mesoderm. Gastrula is a stage of embryonic development, not a tissue. Coelom is a body - cavity and exosderm is not a recognized embryonic tissue.

Answer:

1. a thin membrane that surrounds a mollusk's internal organs
2. ectoderm

endoderm
mesoderm