NEET (Zoology MCQs)

Categories: Other

Q.1. In a population which is in Hardy-Weinberg equilibrium, the frequency of a recessive allele for a certain hereditary trait is 0.40. How many percent of individuals in this population would be expected to show the dominant trait?

(1) 48%

(2) 64%

(3) 36%

(4) 84%

Ans. (4) 84%

Q.2. Select the option that identifies the value of A and B in mmHg in terms of pO2 and pCO2 in different parts involved in diffusion.

             (1)       A - 95,  B – 40 

            (2)        A - 40,  B – 95

            (3)        A - 40,  B – 40 

            (4)        A - 45,  B – 40

Ans. (3)         A - 40,   B – 40 

Q.3. Assertion (A): A person who has sustained an injury and is bleeding should be given anti-tetanus treatment.

Reason (R): Anti-tetanus injection enables immunity by providing toxin for tetanus.

(1) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

(2) Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).

(3) Assertion (A) is true and Reason (R) is false.

(4) Assertion (A) is false and Reason (R) is true.

Ans. (3) Assertion (A) is true and Reason (R) is false.

Q.4. The hormone which controls the daily rhythm of our body and its source gland are respectively.

Choose the correct option.

(1) Growth hormone and hypothalamus.

(2) Oxytocin and hypothalamus.

(3) Thyrocalcitonin and thyroid gland.

(4) Melatonin and pineal gland.

Ans. (4) Melatonin and pineal gland.

Q.5. How many of the following statements are incorrect?

1. Lemurs and spotted cuscus are examples of adaptive radiation.
2. Pouched mammals of Australia survived because of competition with other mammals.
3. The first mammals were like shrews.
4. The skull of a baby chimpanzee looks more like an adult human skull than the skull of an adult chimpanzee.

(1) One

(2) Three

(3) Two

(4) Four

Ans. (3) Two

Q.6. Assertion (A): The inner part of the cerebral hemisphere is called white matter.

Reason (R): The fibers of the tract are covered with myelin sheath, which forms the inner part of the cerebral hemisphere.

(1) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

(2) Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).

(3) Assertion (A) is true and Reason (R) is false.

(4) Assertion (A) is false and Reason (R) is true.

Ans. (1) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

Q.7. Which of the following options contains only polysaccharides?

(1) Sucrose, glucose and fructose

(2) Maltose, lactose and fructose

(3) Glycogen, sucrose and maltose

(4) Glycogen, cellulose and starch

Ans. (4) Glycogen, cellulose and starch

Q.8. Red muscle fibres differ from white muscle fibres by having;

(1) More sarcoplasmic reticulum.

(2) Less myoglobin content.

(3) Higher number of mitochondria.

(4) Higher lactic acid due to anaerobic breakdown of glycogen.

Ans. (3) Higher number of mitochondria.

Q.9. Choose the incorrect statement.

(1) An adult human excretes an average of 1 to 1.5 litres of urine per day.

(2) ANF system acts as a check on the renin-angiotensin system.

(3) CNS sends motor messages to initiate contraction of smooth muscle of urinary bladder.

(4) Presence of glucose and ketone bodies in urine is a sign of diabetes insipidus.

Ans. (4) Presence of glucose and ketone bodies in urine is a sign of diabetes insipidus.

Q.10. Colonies of recombinant bacteria appear white and colonies of non-recombinant bacteria appear blue due to;

(1) Presence of α-galactosidase in recombinant bacteria.

(2) Introductory inactivation of β-galactosidase in recombinant bacteria.

(3) Introductory inactivation of β-glycosidase enzyme in recombinant bacteria.

(4) Introductory inactivation of β-galactosidase in non-recombinant bacteria.

Ans. (2) Introductory inactivation of β-galactosidase in recombinant bacteria.