CBSE Class 12-science Biology Fertilisation, Embryonic Development and Parturition

• event of pregnancy
• what is placenta?
• Chorionic villi and uterine tissue become interdigitated with each other and jointly form -______  
• Please tell
  
• Arrange the terms given below in their order & occurrence in early development of human embryo Implantation, cleavage, inner cell mass, trophoblast, blastomeres, endometrium, morula,blastocyst.
• please answer
  
• Name the foetul membrane that provided a fluide medium to the developing embryo mention its two functions
• What is stem cell  
• What is amniotic fluid
• describe the post fertilisation events

Queries asked on Sunday & after 7 pm from Monday to Saturday will be answered after 12 pm the next working day.