how are parts of birds & fish similar in structure & function
Homologous structures refer to structures on different species that are similar in function and their evolutionary origin. Analogous structures are similar in function but do not share a similarity in evolutionary origin.
how are parts of birds & fish similar in structure & function
Homologous structures are body parts of different organisms that have a similar form, suggesting a common evolutionary origin. These structures may serve different functions in each organism but share a common ancestry.
A structure with similar shape but a different use
The body parts similar in origin and structure you're referring to are "homologous" structures. These structures arise from a common ancestor and have similar anatomical features, despite potentially serving different functions in various species. An example is the forelimbs of mammals, which share a similar bone structure but are adapted for different purposes, such as flying in bats and swimming in whales.
Analogous structures are body parts that have a similar function in different species but have evolved separately, thus not sharing a common ancestor. These structures result from convergent evolution, where organisms adapt to similar environmental pressures.
how are parts of birds & fish similar in structure & function
Two body parts that are physically similar but have different functions in different species are called homologous structures. These structures arise from a common ancestor and exhibit variations in form and function due to adaptation to different environments or lifestyles. An example is the forelimbs of mammals, such as the human arm and the whale's flipper, which serve different purposes despite their anatomical similarities.
Analogous structures are body parts or organs in different species that have a similar function but not necessarily a common evolutionary origin. For example, the wings of birds and bats are analogous structures because they both serve the purpose of flight, even though they evolved independently.
Different species have different names for similar parts because of the diversity of languages and cultures across the world. Each language and culture may have its own unique way of naming and categorizing things, leading to variations in terminology for similar biological structures or functions.
An amoeba does not have specialized structures like feet. However, it moves by extending parts of its cell membrane called pseudopods, which can be likened to the bear's feet in terms of aiding in movement. Both help in mobility, but their structures and functions differ significantly due to the different biological makeup of amoebas and bears.
Analogous structures are body parts that serve similar functions in different species but have different evolutionary origins. They arise from convergent evolution, where different species independently develop similar traits to adapt to similar environments or ecological niches. Examples include the wings of birds and insects, which serve the same purpose of flight but have different anatomical structures.