NEET (Zoology MCQs)
Categories: OTHERS
Q.1. Statement (A): At tissue level, carbamino-haemoglobin is formed in RBCs.
Reason (R): In tissue, high pCO2, low H+ concentration and low temperature favour the formation of carbamino-haemoglobin.
(1) Both Statement (A) and Reason (R) are true, and Reason (R) is the correct explanation of Statement (A).
(2) Statement (A) is false, and Reason (R) is true.
(3) Statement (A) is true, and Reason (R) is false.
(4) Both Statement (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Statement (A).
Ans. (3) Statement (A) is true, and Reason (R) is false.
Q.2. Statement I: Sacoglossus and Ophiura have indirect development.
Statement II: Planaria and Pterophyllum have separate sexes.
(1) Both Statement I and Statement II are correct.
(2) Both Statement I and Statement II are false.
(3) Statement I is correct but Statement II is false.
(4) Statement I is false but Statement II is correct.
Ans. (3) Statement I is correct but Statement II is false.
Q.3. Match List-I with List-II and choose the correct option.
|
List-I |
List-II |
|
(A) Anthropogenic creation |
(I) Average weight of a human infant at birth |
|
(B) Stabilizing selection |
(II) Herbicide resistance |
|
(C) Adaptive radiation |
(III) Industrial melanism |
|
(D) Dark-winged moths |
(IV) Darwin's finch |
A B C D
(1) II I IV III
(2) II III I IV
(3) III I IV II
(4) I III IV II
Ans. A B C D
(1) II I IV III
Q.4. A male frog can be distinguished from a female frog externally by all of the following features except;
- Presence of vocal sacs which produce sound.
- Presence of copulatory organ on the first finger of the forelimbs.
- Presence of nictitating membrane.
- Presence of webbed fingers on the feet.
(1) A, B, C and D
(2) A and B only
(3) A, B and C only
(4) C and D only
Ans. (4) C and D only
Q.5. Which of the following hormones acts on the middle layer of uterus and is released from maternal pituitary gland in response to foetal engorgement reflex?
(1) Prolactin
(2) Oxytocin
(3) GnRH
(4) FSH
Ans. (2) Oxytocin
Q.6. Choose the incorrect statement.
(1) Sperm are produced within the seminiferous tubules.
(2) Implantation takes place in the uterus at the morula stage of embryogenesis.
(3) Oogenesis begins during the development of the embryo.
(4) In humans, the uterine endothelium protrudes out of the body during the menstrual phase.
Ans. (2) Implantation takes place in the uterus at the morula stage of embryogenesis.
Q.7. Match List-I with List-II and choose the correct option.
|
List-I |
List-II |
|
(A) Epidermophyton |
(I) Roundworm |
|
(B) Wuchereria |
(II) Pneumonia |
|
(C) Salmonella |
(III) Elephantiasis |
|
(D) Streptococcus |
(IV) Typhoid |
A B C D
(1) I III II IV
(2) II III I IV
(3) III II IV I
(4) I III IV II
Ans. A B C D
(4) I III IV II
Q.8. Statement (A): Insulin previously used for diabetes was extracted from the pancreas of slaughtered cattle and pigs but this is no longer used.
Reason (R): This carries a risk of contamination with other proteins or impurities, potentially causing allergic reactions or immune responses in patients.
(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. (1) Both Statement (A) and Reason (R) are true, and Reason (R) is the correct explanation of Statement (A).
Q.9. Statement (A): Ionic gradients across the resting membrane are maintained by active transport of ions by the sodium-potassium pump.
Reason (R): It moves 3Na+ towards inside the cell and 2K+ towards outside.
(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. (3) Statement (A) is true, and Reason (R) is false.
Q.10. Complete the analogy regarding selective tubular reabsorption and choose the correct option.
Proximal convoluted tubule : Maximum ::__________ : Minimum
(1) Distal convoluted tubule.
(2) Ascending limb of loop of Henle.
(3) Descending limb of loop of Henle.
(4) Collecting duct.
Ans. (2) Ascending limb of loop of Henle.