Study of evolution and innovation in medicine
A. Osmosis is the answer for this question
If a cell is placed in a hypertonic solution, water will leave the cell, and the cell will shrink. In an isotonic environment, the relative concentrations of solute and water are equal on both sides of the membrane. ... When a cell is placed in a hypotonic environment, water will enter the cell, and the cell will swell.
Answer:
Placenta
Explanation:
Placenta is the connection between the mother and developing foetus. It secretes hCG hormone. The developing foetus gets nourishment from the mother's body by placenta.
It is a temporary endocrine gland and cut after the child birth. This supplies blood, oxygen to the embryo by the process of diffusion. Placenta also acts as the excretory organ for the developing foetus.
Placenta are formed from the finger like projection of blastocyst called trophoblast. The one trophoblast forms placenta while others helps in holing the foetus in the mother's womb.