NEET Zoology MCQs
Categories: EDUCATION
Q.1. Statement (A): Closed circulatory system is more advantageous than open circulatory system.
Reason (R): In closed circulatory system, the flow of fluid can be controlled more precisely.
(1) Statement (A) and Reason (R) both are true, and Reason (R) is the correct explanation of Statement (A).
(2) Statement (A) and Reason (R) both are true, but Reason (R) is not the correct explanation of Statement (A).
(3) Statement (A) is true, and Reason (R) is false.
(4) Statement (A) is false, and Reason (R) is true
Ans. (1) Statement (A) and Reason (R) both are true, and Reason (R) is the correct explanation of Statement (A).
Q.2. Choose the correct statement regarding proteins
(1) Trypsin is a nucleic acid that acts as an enzyme.
(2) Insulin is a polysaccharide hormone.
(3) GLUT-4 is a transporter that enables glucose transport into cells.
(4) Collagen is intracellular basal substance.
Ans. (3) GLUT-4 is a transporter that enables glucose transport into cells.
Q.3. Given below are three statements (A-C) regarding the human circulatory system.
- Blood consists of a fluid matrix, plasma and formed elements.
- A special case of Rh incompatibility has been observed between Rh-ve blood of pregnant mother and Rh+ve blood of fetus.
- Each peak in ECG is identified by a letter from P to T which corresponds to a specific electrical activity of the heart.
Select the option which contains only correct statements.
(1) A and B only
(2) A, B and C
(3) A only
(4) B and C only
Ans. (2) A, B and C
Q.4. Statement I: Coelenterates exchange O2 for CO2 by simple diffusion over their entire body surface.
Statement II: Molluscs perform bronchospiral respiration.
(1) Both Statement I and Statement II are correct.
(2) Both Statement I and Statement II are incorrect.
(3) Statement I is correct but Statement II is incorrect.
(4) Statement I is false but Statement II is correct.
Ans. (1) Both Statement I and Statement II are correct.
Q.5. Statement (A): NaCl is transported by the ascending limb of Henle's loop to be exchanged with the descending limb of vasa recta.
Reason (R): NaCl is returned to the interstitial space by the ascending part of vasa recta.
(1) Both Statement (A) and Reason (R) are true, and Reason (R) is the correct explanation of Statement (A).
(2) Both Statement (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Statement (A).
(3) Statement (A) is true, and Reason (R) is false.
(4) Statement (A) is false, and Reason (R) is true.
Ans. (2) Both Statement (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Statement (A).
Q.6. Statement (A): Myasthenia gravis is an autoimmune disorder.
Reason (R): It will affect the neuromuscular junction leading to fatigue, weakness and paralysis of skeletal muscles.
(1) Statement (A) and Reason (R) both are true, and Reason (R) is the correct explanation of Statement (A).
(2) Statement (A) and Reason (R) both are true, but Reason (R) is not the correct explanation of Statement (A).
(3) Statement (A) is true, and Reason (R) is false.
(4) Statement (A) is false, and Reason (R) is true.
Ans. (1) Statement (A) and Reason (R) both are true, and Reason (R) is the correct explanation of Statement (A).
Q.7. Match List-I with List-II and choose the correct option.
|
|
List-I |
List-II |
|
(A) |
Arachnoid |
(I) Outer layer |
|
(B) |
Dura mater |
(II) Inner layer |
|
(C) |
Pia mater |
(III) Middle layer |
A B C
(1) III II I
(2) II III I
(3) III I II
(4) I III II
Ans. (3) III I II
Q.8. Choose the correct match.
(1) Insulin - reduces glucose utilization by hepatocyte and adipocytes
(2) Cortisol - reduces RBC production, causes inflammation
(3) Thymosin - promotes production of antibodies to provide humoral immunity
(4) Thyroxine - no role in water and electrolyte balance.
Ans. (3) Thymosin - promotes production of antibodies to provide humoral immunity
Q.9. Statement I: Biotechnology deals with small scale production and marketing of products and processes using only living organisms, cells.
Statement II: Biotechnology using genetically modified organisms became possible only when man learnt to alter the properties of DNA and produce recombinant DNA.
(1) Both Statement I and Statement II are correct.
(2) Both Statement I and Statement II are incorrect.
(3) Statement I is correct but Statement II is incorrect.
(4) Statement I is incorrect but Statement II is correct.
Ans. (4) Statement I is incorrect but Statement II is correct.
Q.10. For effective treatment of a disease;
(1) Early diagnosis is required but its pathophysiology is not required.
(2) Early diagnosis is not required but understanding its pathophysiology is required.
(3) Early diagnosis and understanding its pathophysiology are required.
(4) Neither early diagnosis nor understanding its pathophysiology is required.
Ans. (3) Early diagnosis and understanding its pathophysiology are required.