Tag: immunity and blood groups

Questions Related to immunity and blood groups

In which of the following situations, is there a risk factor for children of incurring erythroblastosis foetalis?

zoology immunity and blood groups compatibility of blood groups blood group blood groups and compatibility advance

  1. Mother is Rh -ve and father is Rh -ve.

  2. Mother is Rh -ve and father is Rh +ve.

  3. Mother is Rh +ve and father is Rh +ve.

  4. Mother is Rh +ve and father is Rh -ve.

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Correct Option: B
Explanation:

There are two main causes of erythroblastosis fetalis: Rh incompatibility and ABO incompatibility. Rh incompatibility occurs when a Rh-negative mother is impregnated by a Rh-positive father. The result can be a Rh-positive baby. In such a case, your baby’s Rh antigens will be perceived as foreign invaders, the way viruses or bacteria are perceived. Your blood cells attack the baby’s as a protective mechanism that can end up harming the child. If you’re pregnant with your first baby, Rh incompatibility isn’t as much of a concern. However, when the Rh-positive child is born, your body will create antibodies against the Rh factor. These antibodies will attack the blood cells if you ever become pregnant with another Rh-positive baby.


So, the correct option is 'Option B'.

Xenograft is a graft

biology immunity and blood groups organ donation and body donation blood and organ donation stem cell

  1. Between genetically identical individuals.

  2. Between individuals of different species.

  3. From one individual to another of same species.

  4. From one area to another of same individual.

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Correct Option: B
Explanation:

  • In Xenotransplantation, Xenos means foreign or strange.
  •  It is also called a Heterologous transplant.
  •  In xenotransplantation, the transplantation of living cells, tissues or organs from one species to another.
  •  Such cells, tissues or organs are called xenografts or xenotransplants. Hence, Xenograft is a graft Between individuals of different species. 
So, the correct answer is 'Between individuals of different species'.

There are minimum chances of a body rejecting a transplanted organ if the donor is a

biology immunity and blood groups organ donation and body donation blood and organ donation stem cell

  1. Sibling

  2. Spouse

  3. Offspring

  4. Twin

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Correct Option: D
Explanation:

The maximum similarity in physiology is between twins as they arose from the same conditions and cell arrangement within the womb of the mother.

Hence, there is a minimum chance for rejecting transplanted organs due to similar immune development.
So, the correct option is 'twin'.

Tissue grafting or organ transplant in between the genetically dissimilar individuals of the same species is called

biology immunity and blood groups organ donation and body donation blood and organ donation stem cell

  1. Allogarft

  2. Xenograft

  3. Isograft

  4. Autograft

Show answer
Correct Option: A
Explanation:

  • Transplantation of cells, tissue grafting or organ transplant in between the genetically nonidentical individuals of the same species is called as allotransplant or Allograft.  
  • A graft is the transplantation of an organ or tissue to a different location, with the goal of replacing a missing or damaged organ or tissue. 
  • Grafts are typically moved without their attachments to the circulatory system and must reestablish these, in addition to the other connections and interactions with their new surrounding tissues. 

So, the correct answer is "Allograft".