Structures that have different mature forms but develop from thesame embryonic tissues are called
homologousstructures
. Homologous structuresprovide strong evidence that all four-limbed vertebrates have descended, withmodifications, from common ancestors.
Which of the following structures are homologous come from the same embryonic tissue )?
Examples of homologous structures are the
bones of a cat’s leg, bird’s wing, whale’s flipper and a human arm
. They are homologous because they formed from the same embryonic tissue but developed into different mature structures.
Which are similar structures that have different functions in different organisms?
Homologous structures
are similar physical features in organisms that share a common ancestor, but the features serve completely different functions. An example of homologous structures are the limbs of humans, cats, whales, and bats.
What do you call these structures that are the same in different organisms?
Homologous structures
are structures that are similar in related organisms because they were inherited from a common ancestor.
What structures develop from the same embryonic tissue?
Structures that have different mature forms but develop from the same embryonic tissues are called
homologous structures
.
What are analogous structures?
Analogous structures are
features of different species that are similar in function but not necessarily in structure
and which do not derive from a common ancestral feature (compare to homologous structures) and which evolved in response to a similar environmental challenge.
What are structures that have different mature forms?
Structures that have different mature forms but develop from the same embryonic tissues are called
homologous structures
. Similarities and differences in homologous structures help biologists group animals according to how recently they last shared a common ancestor.
Which is an example of homologous structures?
A common example of homologous structures is
the forelimbs of vertebrates
, where the wings of bats and birds, the arms of primates, the front flippers of whales and the forelegs of four-legged vertebrates like dogs and crocodiles are all derived from the same ancestral tetrapod structure.
Which of the following is an example of analogous structures?
Examples of analogous structures range from
wings in flying animals like bats, birds, and insects
, to fins in animals like penguins and fish. Plants and other organisms can also demonstrate analogous structures, such as sweet potatoes and potatoes, which have the same function of food storage.
What Four animals are listed as examples of homologous structures?
A dolphin’s flipper, a bird’s wing, a cat’s leg, and a human arm
are considered homologous structures.
Do humans have analogous structures?
Analogous structures, as pointed earlier, are
structures having a similar or corresponding function
but the two species under probe should not share the same evolutionary origin. The forelimbs of mammals, such as humans and bats, are homologous structures.
Body parts that share a common function, but neither structure nor common ancestry, are called
analogous structures
. Analogous structures do not provide any evidence forevolutionary descent. Homologous structures that are greatly reduced in size or have little to no function are called vestigial structures.
What anatomy is the study of the similarities and differences in organisms structures?
Comparative anatomy
is the study of the similarities and differences in the structures of different species. Similar body parts may be homologies or analogies.
What is the correct relationship among analogous structures?
Analogous structures are
structures which perform the same function, but have different ancestry
. 3. We know that organisms must have evolved structures independently if they do not have a common ancestor.
How can you tell the difference between homologous and analogous structures?
Homologous structures
share a similar embryonic origin
; analogous organs have a similar function. For example, the bones in the front flipper of a whale are homologous to the bones in the human arm. These structures are not analogous. The wings of a butterfly and the wings of a bird are analogous but not homologous.
Which of the following pairs is the best example of homologous structures?
The correct answer is (B)
Bat wing and human hand
. Homologous structures are similar structures that arise through divergent evolution from a common…
