embryo

[biology_06er]

could someone please help me with this question

...Which of the following structures is/are paired in your embryo model?,,,,(we make a model of an embryo in an upcoming lab..so I guess this refers to "real life")

1)Allantois
2)Pharyngeal pouch
3)Hindbrain
4)Aortic arch
5)Common cardinal vein

Thank you very much
biology_06er

[SMstudent]

one and four are connected i know this becausae it mkaes logic sense