Body Fluids and Circulations

More Topic from Biology

Question 1

'Bundle of His' is a part of which one of the following organs in humans?

  • Heart

  • Kidney

  • Pancreas

  • Brain

Solution

A.

Heart

The bundle of his known as AV bundle (atrio ventricular bundle) is a collection of heart muscles cells specialised for electrical conduction. These specialised muscle fibres in cardiologist wilhelm His, Jr., Who discovered them in 1893.

Question 2

A certain road accident patient with unknown blood group needs immediate blood transfusion. His one doctor friend at once offers his blood. What was the blood group of the donor

  • Blood group B

  • Blood group AB

  • Blood group O

  • Blood group A

Solution

C.

Blood group O

Blood group is tested by two types of sera i.e., anti-A (antibody-A) and anti-B (antibody-B). Persons with blood group O Possess both antibodies in their plasma but have no antigens in their RBCs. So, RBCs of blood group 'O' do not show clumping in way of the sera. That's why, persons with blood group 'O' are called universal donor and they can donate blood to a person with any type of blood group.

Question 3

A drop of each of the following, is placed separately on four slides. Which of them will not coagulate?

  • Blood plasma

  • Blood serum

  • Sample from the thoracic duct or lymphatic system

  • Whole blood from pulmonary vein

Solution

B.

Blood serum

Serum (Plasma-clotting proteins) will not coagulate.

Question 4

A man with blood group 'A' marries a woman with blood group 'B'. What are all the possible blood groups of their offsprings?

  • A, B and AB only

  • A, B, AB and O

  • O only

  • A and B only

Solution

B.

A, B, AB and O

Blood group of parents A and B will have off springs of A, B, AB and O are blood groups. The alleles of both the parents of A and B blood groups will form gametes with given alleles as shown in table below. 
This table gives the probable possibilities of blood groups by random fusion of gametes in offspring born to parents of blood groups A and B.

Question 5

ABO blood grouping is controlled by gene I, which has three alleles and show codominance, There are six genotypes. How  many phenotypes in all are possible.?

  • Six

  • Three

  • Four

  • Five

Solution

C.

Four

In ABO blood group system, inheritance of grouping is controlled by a single autosomal gene on chromosome-9 with three major alleles A, B and O) (IA, IB and Io). The ABO blood group system has at least 6 genotypes. On the basis of presence or absence of antigens and antibodies, 4 blood groups (phenotypes) have been differentiated, ie, A, B, AB and O blood groups.