The experiments with sea urchins conducted by Hans Driesch
showed that ...
Question 28 options:
proximal processes are also crucial for the development of sea urchins
the very early development of the embryo strongly depends on environmental input.
even at the four-cell stage of the embryo's development one can already detect primitive forms of limbs.
cells in a very early stage of development are pluripotent
cells in a very early stage of development are transcendental