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Practice MCQ Questions and answers on Biology-GK

Learn and practice General Knowledge questions and answers on Biology with very easy and understandable explanations. GK questions are very helpful different type of competitive exams. Page-4 section-2

Each section contains 100 MCQs on Biology .
31
Red colour of blood is due to presence of
Discuss
Answer & Solution
Answer: Option B
Solution:
Red colour of blood is due to presence of Hemoglobin.
32
Average life span of human R.B.C is
Discuss
Answer & Solution
Answer: Option C
Solution:
Average life span of human R.B.C is 120 days.
33
With which of the following body organ is 'pace-maker' associated?
Discuss
Answer & Solution
Answer: Option C
Solution:
Pacemaker is associated with heart. Pacemaker are implanted on the body of the patient to give artificial heart beat when the normal body heart beat fails to function in the body of the patient. They are implanted temporarily to treat a slow heartbeat after a heart attack, surgery or overdose of medication.
34
Which of the following blood group is called universal donor ?
Discuss
Answer & Solution
Answer: Option C
Solution:
O- is called universal donor.
35
What carries blood away from the heart?
Discuss
Answer & Solution
Answer: Option A
Solution:
Arteries carry blood away from the heart. Pulmonary arteries transport blood that has a low oxygen content from the right ventricle to the lungs. Systemic arteries transport oxygenated blood from the left ventricle to the body tissues.
36
Which parts of the heart receive blood from the lungs?
Discuss
Answer & Solution
Answer: Option B
Solution:
The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle through the mitral valve. The left ventricle pumps the oxygen-rich blood through the aortic valve out to the rest of the body.
37
The universal donor belongs to blood group
Discuss
Answer & Solution
Answer: Option D
Solution:
The universal donor belongs to blood group O.
38
Person having blood group 'B' can donate the blood to person having blood group
Discuss
Answer & Solution
Answer: Option D
Solution:
Person having blood group 'B' can donate the blood to person having blood group B and AB.
39
Scientist who discovered blood groups was
Discuss
Answer & Solution
Answer: Option C
Solution:
Karl Landsteiner, was an Austrian biologist, physician, and immunologist. He distinguished the main blood groups in 1900, having developed the modern system of classification of blood groups.
40
Where do arteries carry blood?
Discuss
Answer & Solution
Answer: Option A
Solution:
Arteries carry blood away from the heart. Pulmonary arteries transport blood that has a low oxygen content from the right ventricle to the lungs. Systemic arteries transport oxygenated blood from the left ventricle to the body tissues.