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1011. The correct sequence of passage of air through the respiratory tract during respiration is :
A. Nostril - Nasal cavity - Pharynx - Larynx - Trachea - Bronchi - Bronchioles - Alveoli
B. Nostril - Nasal cavity - Bronchioles - Bronchi - Larynx - Pharynx - Tracheaa - Alveoli
C. Nostril - Nasal cavity - Larynx - Pharynx - Trachea - Bronchi - Bronchioles - Alveoli
D. Nostril - Nasal cavity - Larynx - Pharynx - Bronchi - Trachea - Bronchioles - Alveoli
Explanation:
1012. One of the most important theories of general biology was proposed independently by two scientists in the 19th century. The scientists were :
A. Watson and Crick
B. Mendel and Lamarck
C. Wallace and Darwin
D. Beadle and Tatum
Explanation:
1013. Brass gets discoloured in air because of the presence of which of the following gases in air ?
A. Carbon dioxide
B. Oxygen
C. Hydrogen sulphide
D. Nitrogen
Explanation:
1014. In which of the following cell organelles do photo and thermochemical reactions occur in different sites ?
A. Mitochondria
B. Chloroplasts
C. Ribosomes
D. Lysosomes
Explanation:
1015. Why do two eyes give better vision than one ?
A. Because two lenses together impart a higher converging power so that a sharp image is formed on the retina
B. Because two eyes do not form exactly similar images and the fusion f these two dissimilar images in the brain gives the three dimensional or stereoscopic vision
C. Because both the eyes are connected by nerves to the brain and hence transmit the message more quickly to the brain
D. None of these
Explanation:
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