Biology MCQs FOR UPSC(NDA/NA) Exam, SET 2

 Biology MCQs FOR UPSC(NDA/NA) Exam

UPSC NDA/NA BIOLOGY MCQ Q.1

Which one among the following is the hardest part of our body?

(A) skull bones of the head

(B) thumb nails

(C) enamel of teeth

(D) spinal vertebra

Ans.(C)

UPSC NDA/NA BIOLOGY MCQ Q.2

Which of the following is not a micronutrient for a plant?

(A) iron

(B) magnesium

(C) molybdenum

(D) manganese

Ans.(B)

UPSC NDA/NA BIOLOGY MCQ Q.3

Sickle -cell anemia is a disease caused due to the abnormality in

(A) white blood cells

(B) red blood cells

(C) thrombocytes

(D) blood plasma composition

Ans.(B)

UPSC NDA/NA BIOLOGY MCQ Q.4

Certain parts of a plant can be bent easily without breaking.  This flexibility in certain parts, like leaf and stem , can be attributed to the abundance of

(A) parenchyma

(B) collenchyma

(C) sclerenchyma

(D) xylem and phloem

Ans.(C)

UPSC NDA/NA BIOLOGY MCQ Q.5

Carbohydrates are stored in plants and animals in the form of

(A) cellulose and glucose respectively

(B) starch and glycogen respectively

(C) starch and glucose respectively

(D) cellulose and glycogen respectively

Ans.(C)

UPSC NDA/NA BIOLOGY MCQ Q.6

Which one among the following nutrients is a structural component of the cell wall of plants?

(A) manganese
(B) potassium
(C) phosphorus
(D) calcium


Ans.(D)

UPSC NDA/NA BIOLOGY MCQ Q.7

Which one among the following statements is correct?

(A) all arteries carry oxygenated blood
(B) all veins carry oxygenated blood
(C) except the pulmonary artery, all other arteries carry oxygenated blood
(D) except the pulmonary vein, all other veins carry oxygenated blood


Ans.(D)

UPSC NDA/NA BIOLOGY MCQ Q.8

AIDS is caused by Human Immunodeficiency Virus (HIV) which is

(A) retro virus
(B) lenti virus
(C) arbo virus
(D) immune virus


Ans.(A)

UPSC NDA/NA BIOLOGY MCQ Q.9

The main function of inner bark of a woody plant is to

(A) transport minerals and water from the roots to the leaves
(B) act as a membrane impermeable to water and gas
(C) transport food from the leaves to the other parts of the plant
(D) protect the plant from herbivores animals


Ans.(C)

UPSC NDA/NA BIOLOGY MCQ Q.10

Which one among the following is the largest monkey?

(A) spider monkey
(B) baboon
(C) gorilla
(D) howler monkey


Ans.(B)