Question 2 :
Temperature changes in the environment affect most of the animals which are

Question 4 :
Which one of the following is not a characteristic of phylum Annelida? (Prelims 2008)

Question 6 :
The main difference in Gram (+) ve and Gram (-) ve bacteria resides in their (1990)

Question 10 :
{tex}\mathrm{Assertion (A)}{/tex} Death is the one of the important regulatory process on the earth<br />{tex}\mathrm{Reason (R)}{/tex}: It avoids overcrowding caused by continuous reproduction.

Question 11 :
Match the animal name (column-I), with its characteristics (column-II), and the phylum/class (column-III) to which it belongs.<br /><br /> <table style="border-collapse: collapse; width: 100%;" border="1"> <tbody> <tr> <td style="width: 33.3333%;">Column I&nbsp;</td> <td style="width: 33.3333%;">Column II&nbsp;</td> <td style="width: 33.3333%;">Column III&nbsp;</td> </tr> <tr> <td style="width: 33.3333%;">(a)Ichthyophis</td> <td style="width: 33.3333%;">Terrestrial</td> <td style="width: 33.3333%;">Reptilia</td> </tr> <tr> <td style="width: 33.3333%;">(b)Limulus</td> <td style="width: 33.3333%;">Body covered by chitinous exoskeleton</td> <td style="width: 33.3333%;">Pisces&nbsp;</td> </tr> <tr> <td style="width: 33.3333%;">(c)Adamsia</td> <td style="width: 33.3333%;">Radially symmetrical</td> <td style="width: 33.3333%;">Porifera</td> </tr> <tr> <td style="width: 33.3333%;">(d)Petromyzon</td> <td style="width: 33.3333%;">Ectoparas ite</td> <td style="width: 33.3333%;">&nbsp;Cyclostomata</td> </tr> </tbody> </table>

Question 12 :
Sharks and dog_shes differ from skates and rays because (Karnataka NEET 2013)

Question 14 :
Read the following statements and answer the question. <br>(i) They are exclusively marine, radially symmetrical, diploblastic organisms with tissue level of organisation. <br>(ii) Body bears eight external rows of ciliated comb plates, which help in locomotion. <br>(iii) Digestion is both extracellular and intracellular. <br>(iv) Reproduction takes place only by sexual means. Which of the following phylum is being described by above statements?

Question 16 :
<table><tr><td>Column I</td><td>Column II</td></tr><tr><td>A. Agar</td><td>I. Gelidium, Gracilaria</td></tr><tr><td>B. Algin </td><td>II. Brown algae</td></tr><tr><td>C. Carrageen</td><td>III Red algae</td></tr><tr><td>D. Chlorella & Spirullina</td><td>IV Single cell protein, used food supplements by space travelers</td></tr></table>Choose the correct combination

Question 17 :
Assertion (A) The functional unit of excretory organs of lobsters is nephron. <br>Reason (R) The filtration of blood occurs in the Malpighian body (the glomerulus and Bowman’s capsule).

Question 18 :
It is much easier for a small animal to run uphill than for a large animal, because

Question 19 :
Which of the following environmental conditions are essential for optimum growth of Mucor on a piece of bread? (2006)<br>A. Temperature of about 25^oC<br>B. Temperature of about 5^oC<br>C. Relative humidity of about 5%<br>D. Relative humidity of about 95%<br>E. A shady place<br>F. A brightly illuminated place<br>Choose the answer from the following options

Question 20 :
A prediction made by a scientist based on his observations is known as

Question 21 :
<p>Study the following sentences.</p><p>I.It is a terrestrial arthropod.</p><p>II.The prosoma bears a pair of chelicerae, a pair of the pedipalps and four pairs of walking legs.</p><p>III.The metasoma ends in a telson.</p><p>IV.First pair of walking legs are modified as poisonous claws.</p><p>Which of the above are true for <i>Heterometrus</i>?</p>

Question 24 :
<p>The presence of the tube feet is a characteristic feature of the phylum</p>

Question 25 :
In man and mammals, air passes from outside into the lungs through (1994)

Question 29 :
<p> <font face="Cambria Math, serif">Columella auris is found in </font> </p>

Question 30 :
<p> <font face="Cambria Math, serif">What is the scientific name of pinworm of man?</font></p>