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Which one of the following describes correctly the homologous structures?
- a)Organs with anatomical similarities, but performing different functions
- b)Organs with anatomical dissimilarities, but performing same function
- c)Organs that have no function now, but had important function in ancestors
- d)Organs appearing only in embryonic stage and disappearing later in the adult
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Which one of the following describes correctly the homologous structur...
Homologous organs have a common origin and are built on the same basic pattern but perform different functions and are modified accordingly.
Most Upvoted Answer
Which one of the following describes correctly the homologous structur...
Homologous structures are organs or body parts that have similar anatomical structures but may have different functions. These structures are often found in different species that share a common ancestor. The correct answer is option A, which states that homologous structures are organs with anatomical similarities but performing different functions.
Explanation:
1. Definition of homologous structures:
- Homologous structures refer to organs or body parts that have similar structural features, indicating a common evolutionary origin.
- These structures may have been modified over time to perform different functions in different species.
2. Anatomical similarities:
- Homologous structures exhibit similarities in their basic structure, such as the arrangement of bones, muscles, or other tissues.
- These similarities suggest that these structures evolved from a common ancestor.
3. Different functions:
- Despite their similarities in structure, homologous structures may perform different functions in different organisms.
- The changes in function may have occurred as a result of adaptations to different environmental conditions or ecological niches.
4. Examples of homologous structures:
- The forelimbs of vertebrates, such as humans, cats, bats, and whales, are considered homologous structures.
- These forelimbs have similar bone structure, consisting of a humerus, radius, ulna, carpals, metacarpals, and phalanges.
- However, they have different functions, serving as arms, wings, or flippers in different species.
- Another example is the pentadactyl limb, which is a limb with five digits found in various vertebrates.
- This limb structure can be observed in the hands of humans, the wings of bats, and the flippers of dolphins.
- Despite these different functions, the underlying structure is similar.
5. Significance of homologous structures:
- Homologous structures provide evidence for common ancestry and evolution.
- By comparing the anatomical features of different organisms, scientists can infer relationships and evolutionary history.
In conclusion, homologous structures are organs or body parts with similar anatomical structures but may have different functions in different species. The presence of homologous structures supports the concept of common ancestry and evolution.
Explanation:
1. Definition of homologous structures:
- Homologous structures refer to organs or body parts that have similar structural features, indicating a common evolutionary origin.
- These structures may have been modified over time to perform different functions in different species.
2. Anatomical similarities:
- Homologous structures exhibit similarities in their basic structure, such as the arrangement of bones, muscles, or other tissues.
- These similarities suggest that these structures evolved from a common ancestor.
3. Different functions:
- Despite their similarities in structure, homologous structures may perform different functions in different organisms.
- The changes in function may have occurred as a result of adaptations to different environmental conditions or ecological niches.
4. Examples of homologous structures:
- The forelimbs of vertebrates, such as humans, cats, bats, and whales, are considered homologous structures.
- These forelimbs have similar bone structure, consisting of a humerus, radius, ulna, carpals, metacarpals, and phalanges.
- However, they have different functions, serving as arms, wings, or flippers in different species.
- Another example is the pentadactyl limb, which is a limb with five digits found in various vertebrates.
- This limb structure can be observed in the hands of humans, the wings of bats, and the flippers of dolphins.
- Despite these different functions, the underlying structure is similar.
5. Significance of homologous structures:
- Homologous structures provide evidence for common ancestry and evolution.
- By comparing the anatomical features of different organisms, scientists can infer relationships and evolutionary history.
In conclusion, homologous structures are organs or body parts with similar anatomical structures but may have different functions in different species. The presence of homologous structures supports the concept of common ancestry and evolution.
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Which one of the following describes correctly the homologous structures?a)Organs with anatomical similarities, but performing different functionsb)Organs with anatomical dissimilarities, but performing same functionc)Organs that have no function now, but had important function in ancestorsd)Organs appearing only in embryonic stage and disappearing later in the adultCorrect answer is option 'A'. Can you explain this answer?
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Which one of the following describes correctly the homologous structures?a)Organs with anatomical similarities, but performing different functionsb)Organs with anatomical dissimilarities, but performing same functionc)Organs that have no function now, but had important function in ancestorsd)Organs appearing only in embryonic stage and disappearing later in the adultCorrect answer is option 'A'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which one of the following describes correctly the homologous structures?a)Organs with anatomical similarities, but performing different functionsb)Organs with anatomical dissimilarities, but performing same functionc)Organs that have no function now, but had important function in ancestorsd)Organs appearing only in embryonic stage and disappearing later in the adultCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which one of the following describes correctly the homologous structures?a)Organs with anatomical similarities, but performing different functionsb)Organs with anatomical dissimilarities, but performing same functionc)Organs that have no function now, but had important function in ancestorsd)Organs appearing only in embryonic stage and disappearing later in the adultCorrect answer is option 'A'. Can you explain this answer?.
Which one of the following describes correctly the homologous structures?a)Organs with anatomical similarities, but performing different functionsb)Organs with anatomical dissimilarities, but performing same functionc)Organs that have no function now, but had important function in ancestorsd)Organs appearing only in embryonic stage and disappearing later in the adultCorrect answer is option 'A'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which one of the following describes correctly the homologous structures?a)Organs with anatomical similarities, but performing different functionsb)Organs with anatomical dissimilarities, but performing same functionc)Organs that have no function now, but had important function in ancestorsd)Organs appearing only in embryonic stage and disappearing later in the adultCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which one of the following describes correctly the homologous structures?a)Organs with anatomical similarities, but performing different functionsb)Organs with anatomical dissimilarities, but performing same functionc)Organs that have no function now, but had important function in ancestorsd)Organs appearing only in embryonic stage and disappearing later in the adultCorrect answer is option 'A'. Can you explain this answer?.
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Which one of the following describes correctly the homologous structures?a)Organs with anatomical similarities, but performing different functionsb)Organs with anatomical dissimilarities, but performing same functionc)Organs that have no function now, but had important function in ancestorsd)Organs appearing only in embryonic stage and disappearing later in the adultCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Which one of the following describes correctly the homologous structures?a)Organs with anatomical similarities, but performing different functionsb)Organs with anatomical dissimilarities, but performing same functionc)Organs that have no function now, but had important function in ancestorsd)Organs appearing only in embryonic stage and disappearing later in the adultCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Which one of the following describes correctly the homologous structures?a)Organs with anatomical similarities, but performing different functionsb)Organs with anatomical dissimilarities, but performing same functionc)Organs that have no function now, but had important function in ancestorsd)Organs appearing only in embryonic stage and disappearing later in the adultCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
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