Biology Mcqs

Water is _________ times viscous than air?

(A) 50
(B) 1000
(C) 5000
(D) 8000

Submitted By :Ali Uppal

Haemoglobin can be almost completely oxygenated by an oxygen pressure of __________ of mercury.

(A) 10 mm
(B) 60 mm
(C) 10 cm
(D) 100 mm

Submitted By :Ali Uppal

Oxygen contents per liter of air is____________?

(A) 10 ml
(B) 100 ml
(C) 200 ml
(D) 100ml

Submitted By :Ali Uppal

The maximum amount of oxygen which normal human blood absorbs and carries at sea level is ________ per 100 ml of blood.

(A) 10 ml
(B) 20 ml
(C) 30 ml
(D) 40 ml

Submitted By :Ali Uppal

Which of the following animals has a respiratory system with one way flow of the air through the lungs, and the air is renewed after inspiration?

(A) Cockroach
(B) Earthworm
(C) Aves
(D) Frogs

Submitted By :Ali Uppal

When abdomen expands, the number of spiracles open is_____________?

(A) 2
(B) 3
(C) 6
(D) 8

Submitted By :Ali Uppal

Which of the following promotes growth in plants?

(A) Photorespiration
(B) Calvin cycle
(C) Both of these
(D) None of these

Submitted By :Ali Uppal

Number of spiracles present in the thorax of cockroach is___________?

(A) 2
(B) 3
(C) 5
(D) 4

Submitted By :Ali Uppal

Of the following, which one is a contagious disease?

(A) Tuberculosis
(B) Lungs cancer
(C) Asthma
(D) Emphysema

Submitted By :Ali Uppal

Number of spiracles present in cockroach is___________?

(A) 15
(B) 10
(C) 20
(D) 30

Submitted By :Ali Uppal

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