Given below are the names of certain stages/substances related to reproduction and found in human body. Answer the questions related to them,
(a) Foetus.
● Where is it contained?
● How does it differ from an embryo?
(b) Hyaluronidase.
● Is it an enzyme or simply a protein?
● What is its function?
(c) Morula.
● What is this stage?
● Name the stage which comes next to it?
(d) Amniotic fluid.
● Where is it found?
● What are its functions?
(e) Gestation.
● What is its meaning?
● How long does it normally last?
(f) placenta.
● What are the two sources that form placenta? Name any two main substances which pass from foetus to mother through the placenta.
● Name any two main substances which pass from fetus to mother through the placenta.
● Name any two hormones it produces.
(g) Implantation.
● The development stage that undergoes this process.
●The approximate time after fertilization, when it occurs.
