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  • Which of the following statements are correct? Statement 1: Unborn or unhatched organisms that are in the early stages of development are called embryos. <p dir

Which of the following statements are correct?

Statement 1: Unborn or unhatched organisms that are in the early stages of development are called embryos.

Statement 2: The growth and development of embryos happens in stages. The physical characteristics of an embryo change during its growth. Some features become more focused. Some features vanish.

Statement 3: In general, the early stages of development in related species' embryos share more characteristics than the later stages.

Statement 4: There may be similarities between the embryos of different species that are not apparent when the organisms are completely developed. Numerous of these resemblances are homologous traits. These characteristics demonstrate the species' evolutionary relationships.

Option: 1

Statements 1 and 2 are correct but statements 3 and 4 are incorrect.


Option: 2

Statements 1 and 3 are correct but statements 2 and 4are incorrect.


Option: 3

Statements 1, 2 and 3 are correct but statement 4 is incorrect.


Option: 4

All the statements 1,2,3 and 4 are correct.


Answers (1)

best_answer

  • Unborn or unhatched organisms that are in the early stages of development are called embryos.

  • The growth and development of embryos happens in stages. The physical characteristics of an embryo change during its growth. Some features become more focused. Some features vanish.

  • There may be similarities between the embryos of different species that are not apparent when the organisms are completely developed. Numerous of these resemblances are homologous traits. These characteristics demonstrate the species' evolutionary relationships.

  • For instance, pharyngeal arches, also known as gill arches, are homologous features found in all embryos. These arches grow into gill-related structures in fish. These arches grow into the components of the ears and mouth in animals.

  • Typically, at earlier stages of development, related species' embryos share more characteristics than they do at later stages.

  • Option 4 is the correct answer.

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Pankaj

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