Blood

Q.

The amount of water present in blood plasma is

1. $60\%$

2. $70\%$

3. $80\%$

4. $90\%$

Q.

The two main components of blood are plasma and __________

1. Plasma

2. Corpuscles

3. Haemoglobin

4. Oxygen

Q.

Why is blood that flows from the lungs to the heart bright red rather than dark red?

1. The lungs add a pigment (dye) to blood as it flows through them.

2. Oxygen makes it red.

3. Carbon dioxide makes it red.

4. Gastric juices produce the red colour of the blood.

Q.

Name the largest blood cells.

Q.

Red blood cells help in clotting of blood.

1. True
2. False

Q.

Who found red blood cells?

Q.

Why does blood taste saltish?

1. Due to the presence of hormones

2. Due to the presence of sodium chloride

3. Due to the presence of proteins

4. Due to the presence of haemoglobin

Q.

Which of the following functions are carried out by blood?

1. transports digested food, water and oxygen to all the parts of the body.

2. exports waste material from the different parts of the body to suitable destination.

3. protects the body against invasion by foreign germs and microbes.

4. serves all the above purposes.

Q. Which of the following is responsible for clotting of blood?

1. RBC
2. WBC
3. Platelets
4. Plasma

Q.

Which of the following is not a component of the plasma?

1. Nutrients

2. Proteins

3. Hormones

4. WBC

Q.

Is blood part of the circulatory system?

Q. is the chamber of the heart that contains oxygenated blood.

1. Left atrium
2. Right atrium
3. Right ventricle

Q. An organism 'X' has a flexible backbone interconnected with muscles that help it get a good grip on ground even without legs. Identify X.

1. Snail
2. Bird
3. Earthworm
4. Snake

Q.

Which of the following are the components of the blood?

1. Red Blood Cells, White Blood Cells, Stem Cells, Platelets

2. Red Blood Cells, Stem Cells, Plasma, Platelets

3. Red Blood Cells, White Blood Cells, Platelets, Plasma

4. Cardiac cells, White Blood Cells, Stem Cells, Plasma

Q. Which of the following are parts of the systemic circuit?

1. Blood from heart is carried to the lungs for oxygenation
2. Blood from all parts of the body is brought back to the heart
3. Oxygenated blood is pumped from the heart to all parts of the body
4. Oxygenated blood is transported from the lungs to the heart.

Q.

The liquid component of blood is called __.

Q. Differentiate between the following pair of terms:​

(c) Vena cava and aorta

Q.

Identify the function of blood from the given choices.

1. Maintain skin colour

2. Help in body balance

3. Maintain body temperature

4. Prevents body odour

Q. Which of the following is/are absent in all the cells shown below?​
​

Q. The pulmonary circuit carries deoxygenated blood to the lungs to pick up and release .

1. carbon dioxide
2. nitrogen
3. hydrogen
4. oxygen

Q.

writeabout the binomial system of naming organisms

Q.

Red blood cells help in clotting of blood.

1. True
2. False

Q. The right side of the heart

1. Receives blood from the lungs
2. None of the above
3. Pumps blood to the rest of the body
4. Receives blood from the rest of the body

Q. Which of the following is called the white coloured vascular connective tissue?

1. Lymph
2. Blood
3. Serum
4. Plasma

Q. The walls of the small intestine absorb
the nutrients from the digested food into the _____.

1. saliva
2. water
3. blood
4. nitrogen

Q.

The shape of RBC is _____.

1. oval

2. square

3. elliptical

4. biconcave

Q. Value based questions.
What advantages are there to mammals in possessing a flexible connection between the pectoral girdle and vertebral column?

Q.

Which of the following is a component of blood?

1. RBC

2. WBC

3. Plasma

4. All of the above

Q.

Which of the following statements is false?

1. (i) A and B, (ii) B; neither anti-A nor anti-B

2. (i) Neither A nor B; (ii)both anti-A and anti-B

3. (i) A, (ii) anti-B

4. (i) B, (ii) anti-A