Guanine and adenine, structure-wise, are purines.
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The serosa is the outermost layer of the intraperitoneal organs (it's also considered the visceral peritoneum). In most alimentary canal organs, its made up of areolar connective tissue covered with mesothelium, a single layer of squamous epithelial cells
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The correct answer is option a, that is, multicellular, heterotrophic, and diploid.
Animals refer to the multicellular eukaryotic species, which forms the biological kingdom Animalia. Animals exhibit many features, which distinguish them from other living species. The animals are multicellular and eukaryotic, unlike prokaryotic bacteria, and unlike protists that are eukaryotic but unicellular.
The animals are heterotrophic, not like algae and plants that generate their own food. Almost all the animals make use of some kind of sexual reproduction. They are diploid and generate haploid gametes by the process of meiosis, the larger non-motile gametes are ova and the smaller motile gametes are spermatozoa.
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E sunlight i hope it is helpful
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Explanation:
Most fish rise and sink using this method, but not all do. Some species don't need a swim bladder because they spend all their life skimming along the ocean floor. Other fish, such as rays and sharks, ascend and descend by propelling themselves forward.