Biology Mcqs

Voice box is another name used for___________? A. Buccal cavity B. Pharynx C. Larynx D. Chest Cavity

The blood enters the ________________ side of heart ? A. Posterior B. Anterior C. Lateral D. All possible

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

When abdomen expands, the number of spiracles open is_____________? A. 2 B. 3 C. 6 D. 8

Which of the following promotes growth in plants? A. Photorespiration B. Calvin cycle C. Both of these D. None of these

Number of spiracles present in the thorax of cockroach is___________? A. 2 B. 3 C. 5 D. 4

Of the following, which one is a contagious disease? A. Tuberculosis B. Lungs cancer C. Asthma D. Emphysema

Number of spiracles present in cockroach is___________? A. 15 B. 10 C. 20 D. 30

A disease of longs in which inside of the lungs is damaged resulting in cough and fever? A. Lung cancer B. Asthma C. Emphysema D. Pulmonary tuberculosis

Arterial blood contains _________ of CO2 per 100 ml of blood A. 54 ml B. 60 ml C. 64 ml D. 50 ml