Questions: The forelimbs of lizards and frogs share a common bony structure and embryonic origin. Although insects and birds both use wings to fly, the wings in each species are structurally different and do not share a common embryonic origin. A teacher asked four of her students to identify structures based on the information above. The students' answers are shown in the table below. Forelimbs of lizards and frogs Wings of insects and birds -------------------------------------------------------------------------- Student 1 analogous analogous Student 2 homologous analogous Student 3 analogous homologous Student 4 homologous homologous Which student correctly identified the structures? A. Student 4 B. student 2 C. student 1

The forelimbs of lizards and frogs share a common bony structure and embryonic origin. Although insects and birds both use wings to fly, the wings in each species are structurally different and do not share a common embryonic origin.

A teacher asked four of her students to identify structures based on the information above. The students' answers are shown in the table below.

Forelimbs of lizards and frogs Wings of insects and birds
--------------------------------------------------------------------------
Student 1 analogous analogous
Student 2 homologous analogous
Student 3 analogous homologous
Student 4 homologous homologous

Which student correctly identified the structures?
A. Student 4
B. student 2
C. student 1

Transcript text: The forelimbs of lizards and frogs share a common bony structure and embryonic origin. Although insects and birds both use wings to fly, the wings in each species are structurally different and do not share a common embryonic origin. A teacher asked four of her students to identify structures based on the information above. The students' answers are shown in the table below. \begin{tabular}{|l|c|c|} \cline { 2 - 3 } \multicolumn{1}{c|}{} & \begin{tabular}{c} Forelimbs of \\ lizards and frogs \end{tabular} & \begin{tabular}{c} Wings of \\ insects and birds \end{tabular} \\ \hline Student 1 & analogous & analogous \\ \hline Student 2 & homologous & analogous \\ \hline Student 3 & analogous & homologous \\ \hline Student 4 & homologous & homologous \\ \hline \end{tabular} Which student correctly identified the structures? A. Student 4 B. student 2 C. student 1

Solution

The answer is B: student 2.

Explanation for each option:

Student 1: Incorrect. Student 1 identified both the forelimbs of lizards and frogs, and the wings of insects and birds as analogous. However, the forelimbs of lizards and frogs are homologous structures because they share a common bony structure and embryonic origin. The wings of insects and birds are analogous because they serve the same function (flight) but do not share a common embryonic origin.
Student 2: Correct. Student 2 identified the forelimbs of lizards and frogs as homologous, which is correct because they share a common bony structure and embryonic origin. Student 2 also identified the wings of insects and birds as analogous, which is correct because they serve the same function but do not share a common embryonic origin.
Student 3: Incorrect. Student 3 identified the forelimbs of lizards and frogs as analogous, which is incorrect because they are homologous. Student 3 also identified the wings of insects and birds as homologous, which is incorrect because they are analogous.
Student 4: Incorrect. Student 4 identified both the forelimbs of lizards and frogs, and the wings of insects and birds as homologous. This is incorrect because while the forelimbs of lizards and frogs are homologous, the wings of insects and birds are analogous.

Summary: Student 2 correctly identified the forelimbs of lizards and frogs as homologous and the wings of insects and birds as analogous.

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