Yellow cytoplasm in ascidian gives rise to______________?
Correct answer: B. Muscle cells
- A. Epidermis
- B. Muscle cells
- C. Gut
- D. Notochord
Explanation
In ascidian embryos, the yellow cytoplasmic region contains determinants that direct cells to develop into muscle tissue. These cytoplasmic factors influence gene expression during early embryonic development. Epidermis is a likely distractor because it is also an ectodermal body tissue, but it does not arise from the yellow muscle-forming cytoplasm.
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Animal and plant cells share a plasma membrane, cytoplasm, nucleus, ribosomes, mitochondria and endoplasmic reticulum, but plant cells also have a cellulose cell wall, chloroplasts and a large permanent vacuole. Questions cover organelle structure and function, differences between the two cell types, and how membranes control movement of substances.
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