Task: Paraphrasing
Input (English): Question: Invertebrates (and higher animals) can also be placed in one of two groups based on how they develop as what? 
Answer: embryos. 
Sentence: Invertebrates (and higher animals) can also be placed in one of two groups based on how they develop as embryos.
Output (English): Developing embryos themselves tell which group they will be placed in, invertebrates (and higher animals).