1 Mark Questions
Question 1 : Give the technical term for the fluid portion of blood.
Answer : Plasma is the technical term for the fluid portion of blood.
Question 2 : Briefly explain the term diapedesis.
Answer : Diapedesis is the process by which white blood cells squeeze out through the walls of capillaries to reach at the site of infection.
Question 3 : Give the biological /technical terms for the following.
WBCs squeeze through the walls of the capillaries into the tissue.
Answer : Diapedesis.
Question 4 : Name the following.
The mineral element essential for the clotting of blood.
Answer : Calcium is the mineral element essential for the clotting of the blood.
Question 5 : State the main function of thromocytes.
Answer : Thrombocytes helps in blood clotting by producing thromboplastin.
Question 6 : Give a reason for the following.
A matured mammalian erythrocyte lacks nucleus and mitochondria.
Answer : Lack of nucleus and mitochondria helps in having more surface area for absorption and transport of oxygen.
Question 7 : Write down the difference between the following pairs as indicated within the brackets.
Erythrocytes and leucocytes (function).
Answer : Erythrocytes : Transport respiratory gases.
Leucocytes : Produce antibodies and protect the body against disease causing germs.
Question 8 : State the main function of thrombocytes.
Answer : Thrombocytes helps in blood clotting by producing thromboplastin.
Question 9 : Give the technical biological term for the following.
The process by which white blood cells engulf harmful microbes.
Answer :
Question 10 : State whether the following statement is true or false. If false, write the correct statement by changing the first word only.
Iron is the mineral element essential for the clotting of the blood.
Answer : Calcium is the mineral element essential for the clotting of the blood.
Question 11 : Give one reason for each of the following.
Erythrocytes are biconcave discs and lack nucleus.
Answer : RBCs/erythrocytes are biconcave disc-like structures that lacks nucleus to provide large volume surface for the absorption and transport of oxygen.
Question 12 : Choose the odd one out from each of the following sets, giving the reason for your choice. Basophils, neutrophils, monocytes, eosinophils.
Answer : Odd one : Monocytes.
Category : Rest all are agranulocyte.
Question 13 : Name the following.
The respiratory pigment present in erythrocytes.
Answer : Haemoglobin is the iron containing respiratory pigment found in erythrocytes.
Question 14 : Given below are certain biological statements which are incomplete and hence incorrect. Rewrite the correct form of the statement by inserting a suitable word/words at the right place. Do not delete any word already given in the statement. Underline the inserted word/words.
………… is the process of movement of corpuscles through capillary walls.
Answer : Diapedesis is the process of movement of white blood cells through capillary walls into the extra cellular fluid.
Question 15 : Give one point difference between the following pair on the basis of what is indicated in bracket.
Red blood corpuscles and white blood corpuscles (origin).
Answer : The difference between RBC and WBC are given below:
| RBC | WBC |
| These are originated in the bone marrow of long bone. | These are originated in the lymph nodes. |
Question 16 : State whether the following statements are true or false. Correct and rewrite the false statements by changing either the first or the last word.
Answer : The statement given is false. Platelets which disintegrates in the injured tissue cells release thrombokinase.
Question 17 : Differentiate between the following.
Blood plasma and serum.
Answer : The difference between blood plasma and serum are given below.
| Blood Plasma | Serum |
| It is the liquid portion of the blood excluding blood corpuscles. | It is known as the blood plasma without protein (fibrinogen) in it. |
Question 18 : Given below is the functional activity of specific structures in the body of the living organisms.
Name the structure responsible for the transport of oxygen to the cells of the human body.
Answer : Red blood cells transport oxygen to the cells of the human body.
Question 19 : Name the following.
The iron containing pigment in erythrocytes.
Answer : Haemoglobin is the iron containing respiratory pigment found in erythrocytes.
Question 20 : Agranulocytes are
a) lymphocytes and monocytes
b) lymphocytes and basophil
c) eosinophils and basophils
d) eosinophils and monocytes
Answer : a) lymphocytes and monocytes.
Question 21 : Given below is an example of a certain structure and its special functional activity kidney and excretion.
Erythrocyte and ……………….
Answer : Erythrocytes and gaseous exchange.
Question 22 : Select the correct answer out of the four available choices given under each question.
The chief function of the lymph nodes in mammals is to
a) produce WBCs
b) produce hormones
c) destroy old RBCs
d) destroy pathogens
Answer : a) produce WBCs
Biology Questions and Answers ICSE Class 10 :
Cell Cycle and Cell Division | Genetics | Absorption by Roots| Transpiration | Photosynthesis | Circulatory System | Excretory System | Nervous System | Endocrine System | Reproductive System | Population and Its Control | AIDS to Health and Health Organisation | Pollution