Animals
The organ level of organisation in animals can be first detected in flatworms and the more advanced phyla. The less-advanced taxons (like Placozoa, Porifera and Radiata) do not show consolidation of their tissues into organs.
Read more about this topic: Organ (anatomy)
Famous quotes containing the word animals:
“Only the most acute and active animals are capable of boredom.—A theme for a great poet would be God’s boredom on the seventh day of creation.”
—Friedrich Nietzsche (1844–1900)
“Old women snore violently. They are like bodies into which bizarre animals have crept at night; the animals are vicious, bawdy, noisy. How they snore! There is no shame to their snoring. Old women turn into old men.”
—Joyce Carol Oates (b. 1938)
“From the oyster to the eagle, from the swine to the tiger, all animals are to be found in men and each of them exists in some man, sometimes several at the time. Animals are nothing but the portrayal of our virtues and vices made manifest to our eyes, the visible reflections of our souls. God displays them to us to give us food for thought.”
—Victor Hugo (1802–1885)