Morphological Evidence, Name the condition where organisms of different species show similar external structural features (like shape of mouth, structure of nose) indicating a common ancestor, Anatomical Evidence, Name the evidence that studies the internal structure of organisms., Homologous Organs, Name the organs that have the same basic internal anatomical structure and origin, but perform different functions in different organisms (e.g., forelimb of human, flipper of whale, wing of bat)., Analogous Organs, Name the organs that have different basic anatomical structures and origins, but perform similar functions (e.g., wings of a butterfly and wings of a bird)., Vermiform Appendix, Name the non-functional, degenerated organ attached to the large intestine in humans that is vestigial, but fully functional in herbivorous ruminants for digesting cellulose., Vestigial Organs, Name the term used for useless, underdeveloped, or degenerated organs/structures present in organisms that have lost their original function over time., Fossils, Name the preserved remains, impressions, or traces of ancient organisms found buried under the Earth's crust., Carbon Dating Method, Name the technique/method used to determine the exact age of fossils by measuring the radioactive decay of carbon isotopes (C14) present in organic remains., Archaeopteryx, Name the fossil bird that acts as a connecting link between reptiles and birds because it had feathers and wings like birds, but teeth and a long tail like reptiles., Duck-billed Platypus, Name the egg-laying mammal that serves as a connecting link between reptiles and mammals (lays eggs like reptiles, but has mammary glands and hair like mammals)., Embryology, Name the branch of biology that studies the early developmental stages of organisms (embryos), showing remarkable similarities among different vertebrates in their initial stages., Coccyx (Tail bone), Name one vestigial organ found in human beings.

Embryology

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