Questions

BIO1022 MA S2 2025 On Campus Test 1

Multiple fill-in-the-blank

Question textFill in the blanks to complete the paragraph.In triploblastic animals, three germ layers form during embryonic development. The Answer 1 Question 21[select: , ectoderm, mesoderm, coeloderm, endoderm] gives rise to the skin and nervous system, the Answer 2 Question 21[select: , coeloderm, endoderm, ectoderm, mesoderm] forms the lining of the digestive tract, and the Answer 3 Question 21[select: , coeloderm, mesoderm, endoderm, ectoderm] develops into muscles and internal organs. Some animals have a body cavity that is not fully lined by mesoderm; this type of body cavity is called the Answer 4 Question 21[select: , acoelom, pseudocoelom, coelom].

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The question asks you to complete a short paragraph about germ layers and body cavities, with four blanks in sequence. I will evaluate plausible options for each blank and explain which choice best fits, along with why the other common options do not. Blank 1 options (which germ layer gives rise to the skin and nervous system): - ectoderm: Correct. The ectoderm is the outer germ layer that differentiates into the skin (epidermis) and the nervous system (brain and spinal cord) in triploblastic animals. - endoderm: Incorrect here. The endoderm forms the lining of interna......Login to view full explanation

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