Question:

Sweet potato and potato are examples of

Updated On: Jun 18, 2022

homologous structure
analogous structure
Both [a] and [b]
None of the above

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The Correct Option is B

Solution and Explanation

Analogous structures are those structures which are different in their basic structure and developmental origin but appear similar and perform similar function. For example sweet potato (Ipomoea batata) is an underground tuberous root and potato (Solanum tuberosum) is an underground stem but both are modification and meant for storage of food. Homologous structures are those structure which have the same embryonic origin and basic structure though they may or may not perform the same functions. For example phyllode or phylloclade of Opuntia; Ruscus and cladode of Asparagus.

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Concepts Used:

Evidence for Evolution

Evolution evidence is one of the most important pillars of current biological theory. It is the only way to prove all of the proposed evolution theories. Fossils, comparative anatomy, and embryo development patterns are among the evidence used to support biological evolution.

Fossils are the non-degraded remains of living organisms discovered within rocks. The age of the fossil is determined by the layer in which it was recovered. In comparison to the fossils found in the upper layers, those found farther down are older. They provide insight on the condition of the specific region. Palaeontology is the scientific study of fossils.

Comparative Anatomy describes how many organisms share an origin and how natural selection or genetic drift led to the evolution of many diverse organisms. There were two categories of comparative anatomy found: homologous organs and analogous organs.

In Embryonic Development, until a certain stage of gestation, the embryos of various species have a similar structure. Human embryos, pig embryos, reptile embryos, and bird embryos, for instance, have similar embryonic development. As they grow older, they transform into the appropriate species. This demonstrates common ancestry once again.