Question
The embryonic development of animals suggests an order of relation between humans and other animals; some animals being more closely related to humans than the others. Compare the embryos of the salamander, chicken, and monkey to that of the human (top image).
What three statements about the embryos are true? Check all that apply.
Responses
A All four animals begin as fertilized eggs.All four animals begin as fertilized eggs.
B The salamander and the chicken do not have an umbilical cord.The salamander and the chicken do not have an umbilical cord.
C Only the fish has ancestral gill slits.Only the fish has ancestral gill slits.
D All four have identical limb buds.All four have identical limb buds.
E Only the chicken will develop a shell breaker.Only the chicken will develop a shell breaker.
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What three statements about the embryos are true? Check all that apply.
Responses
A All four animals begin as fertilized eggs.All four animals begin as fertilized eggs.
B The salamander and the chicken do not have an umbilical cord.The salamander and the chicken do not have an umbilical cord.
C Only the fish has ancestral gill slits.Only the fish has ancestral gill slits.
D All four have identical limb buds.All four have identical limb buds.
E Only the chicken will develop a shell breaker.Only the chicken will develop a shell breaker.
Skip to navigation
© Progress Learning 2025, All Rights Reserved.
Terms
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Privacy
PHONE 1-877-377-9537
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FAX 1-877-816-080
Answers
Answered by
GPT-4o mini
Based on embryonic development comparisons among a salamander, chicken, monkey, and human, the following statements can be evaluated:
A. **All four animals begin as fertilized eggs.** - **True**: This statement is accurate as all animals, including humans, salamanders, chickens, and monkeys, begin their development as fertilized eggs.
B. **The salamander and the chicken do not have an umbilical cord.** - **True**: This statement is accurate. Salamanders and chickens do not develop an umbilical cord; instead, humans and most mammals develop one to connect to the placenta for nutrient supply.
C. **Only the fish has ancestral gill slits.** - **False**: While fish have gill slits, early embryonic stages of other vertebrates, including humans and chickens, also show structures that resemble gill slits, which are indicative of a shared ancestry.
D. **All four have identical limb buds.** - **False**: While all four species may develop limb buds, they will not be identical. Each species has distinct limb bud structures that will develop into limbs appropriate for their form and function.
E. **Only the chicken will develop a shell breaker.** - **False**: Chickens do not develop a "shell breaker." The term generally refers more to specialized structures in certain species (like birds) for breaking out of eggs, but it is misleading to say only chickens develop this without context.
In summary, the true statements from the provided options are A and B.
A. **All four animals begin as fertilized eggs.** - **True**: This statement is accurate as all animals, including humans, salamanders, chickens, and monkeys, begin their development as fertilized eggs.
B. **The salamander and the chicken do not have an umbilical cord.** - **True**: This statement is accurate. Salamanders and chickens do not develop an umbilical cord; instead, humans and most mammals develop one to connect to the placenta for nutrient supply.
C. **Only the fish has ancestral gill slits.** - **False**: While fish have gill slits, early embryonic stages of other vertebrates, including humans and chickens, also show structures that resemble gill slits, which are indicative of a shared ancestry.
D. **All four have identical limb buds.** - **False**: While all four species may develop limb buds, they will not be identical. Each species has distinct limb bud structures that will develop into limbs appropriate for their form and function.
E. **Only the chicken will develop a shell breaker.** - **False**: Chickens do not develop a "shell breaker." The term generally refers more to specialized structures in certain species (like birds) for breaking out of eggs, but it is misleading to say only chickens develop this without context.
In summary, the true statements from the provided options are A and B.
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