Which of the following is the most inferior germ layer of the gastrula?
a) ectoderm
b) endoderm
c) mesoderm
d) chorion
Epiblast entering the primitive streak and push laterally between the cells at the upper and lower surfaces, forming the…
a) ectoderm
b) endoderm
c) mesoderm
d) chorion
The cells that remain on the embryo’s dorsal surface are the………
a) ectoderm
b) endoderm
c) mesoderm
d) chorion
Which of the following cells form notochord?
a) ectoderm
b) endoderm
c) mesoderm
d) allantois
Explanation: a cartilaginous skeletal rod supporting the body in all embryonic and some adult chordate animals.
Which of following is the first axial support of the embryo?
a) bones
b) skin
c) notochord
d) spinal cord
What is the length of embryo at the time of aggregation of mesodermal cells forming notochord?
a) 2mm
b) 2cm
c) 4 mm
d) 4cm
