In vertebrates the nails are formed from
Ectoderm
Mesoderm
Endoderm
Ecto-mesoderm
The stroma of the ovary consists of nerves, blood vessels, muscle fibres and a type of protein called
Each seminiferous tubule is lined on its inside by two types of cells $A$ and $B$. Which of the following options is correct, w.r.t. the type of cell and its function?
$A$ | $B$ |
The elastic tissue connecting the cauda epididymis to the scrotal sac is
Which of the following is not evident that the pattern of cleavage is determined by factors in the egg cytoplasm rather than by genes of zygote
Placenta has an outer layer which is selectively permeable and hormone secreting which is known as