Which of the following organ/s is/are not derived from mesoderm?
a) bones and muscles
b) brain and spinal cord
c) skin epidermis
d) both b and c
The mesodermal cell which give rise to urinary system in frog are called……..
a) nephrotome
b) parietal
c) pincer cells
d) blastomeres
Which of the following organ/s is/are derived from the ectoderm layer of the embryo?
a) nervous system
b) skin epidermis
c) digestive system
d) both a and b
Which of the following lays down the basic structural framework of the embryo and sets the stage for the rearrangement of organogenesis?
a) gastrulation
b) morulation
c) fertilization
d) neurolation
Explanation: formation of body organs and organ systems is called organogenesis
The process in which cells become specialized structurally and functionally during early development is known as…
a) organogenesis
b) morulation
c) fertilization
d) gastrulation
The first major event in organogenesis is/are………
a) formation of heart
b) formation of skin epidermis
c) neurolation
d) all of these
Explanation: a process in which the neural plate bends up and later fuses to form the hollow tube that will eventually differentiate into the brain and the spinal cord of the central nervous system.
