Question 13 :
Useful energy is provided to living beings by the process of 

Question 19 :
In rabbits, left and right lungs are divided into how many lobes?

Question 23 :
The organs which do not participate in buccal respiration of frog are

Question 26 :
The structure which prevents the entry of food into respiratory tract is

Question 31 :
Very high number of alveoli present in a lung is meant for

Question 32 :
Match the structures with the functional names given under. Choose the answer which gives the correct combination of the alphabets of the two columns.<br/><table class="wysiwyg-table"><tbody><tr><td></td><td><b>List I</b></td><td></td><td><b>List II</b></td></tr><tr><td>A</td><td>Larynx</td><td>1</td><td>Lid of larynx</td></tr><tr><td>B</td><td>Trachea</td><td>2</td><td>Air sacs</td></tr><tr><td>C</td><td>Alveoli</td><td>3</td><td>Voice box</td></tr><tr><td>D</td><td>Epiglottis</td><td>4</td><td>Wind pipe</td></tr><tr><td></td><td></td><td>5</td><td>Common passage</td></tr></tbody></table>

Question 34 :
In the cycle of Ascaris lumbricoides, rhabditiform larva undergoes 2nd and 3rd moultings in