List the components of blood. Mention their functions.
Important Questions on Transportation and Excretion in Plants and Animals
Complete the given analogy.
Heart: Kidney:: _____ : _____.
Complete the given analogy.
Xylem : Water : : Phloem : ______
Complete the given analogy.
Earthworm : Nephridia : : Insects : ______
Read the passage given below.
Human blood is grouped into four A, B, AB and O on the basis of proteins, also known as antigens, present on the surface of red blood cells. Blood is further grouped as RH positive or RH negative on basis of the Rhesus factor present on the surface of RBC. Blood type -A contains only A-antigens, blood type -B contains only B-antigens, whereas AB contains both the antigens. Blood group O on the other hand does not contain any antigen. Blood group O negative (O-) is known as a universal donor because it can be donated to people of any blood group. The type AB positive (+AB) is known as universal recipient as it can receive blood from people of any blood group.
Answer the following choosing the correct option given below:
Which of the following blood group is known as a universal donor?
Read the passage given below.
Human blood is grouped into four A, B, AB and O on the basis of proteins, also known as antigens, present on the surface of red blood cells. Blood is further grouped as RH positive or RH negative on basis of the Rhesus factor present on the surface of RBC. Blood type -A contains only A-antigens, blood type -B contains only B-antigens, whereas AB contains both the antigens. Blood group O on the other hand does not contain any antigen. Blood group O negative (O-) is known as a universal donor because it can be donated to people of any blood group. The type AB positive (+AB) is known as universal recipient as it can receive blood from people of any blood group.
Answer the following choosing the correct option given below:
Which of the following group is universal recipient?
Read the text and answer the question.
Mr. Khosla makes it a point to donate blood in blood donation camps every year so that blood can be given to the people who need it. What value does Mr. Khosla exhibit?
