C. Allantois stores waste products produced by an embryo
hope this helps you out good luck.!!!!
Answer:
endothermic is the right answer
1. Multicellular
2. Multicellular, tissues, bilateral symmetry, body cavity, coelom, segmentation, jointed appendages, exoskeleton
3. Annelids
4.Jointed appendages, exoskeleton
5. Evolutionary phylogeny is unknown, but it is known to have some of these adaptive traits (multicellular, tissues, bilateral sym, body cavities, coelom)
6.sponges, jellyfish, roundworms, snails
Pre-embryonic cleavages make use of the abundant cytoplasm of the conceptus as the cells rapidly divide without changing the total volume.
