Question 7 :
The presence of gill slits, in the embryos of all vertebrates support the theory of?

Question 12 :
Which of the following are correct?<br/><table class="wysiwyg-table"><tbody><tr><td>(i)</td><td>Diploblastic :</td><td>Poriferans, Coelenterates</td></tr><tr><td>(ii)</td><td>Triploblastic :</td><td>Platyhelminthes to Chordates</td></tr><tr><td>(iii)</td><td>Acoelomata :</td><td>Poriferans, Coelenterates, Platyhelminthes</td></tr><tr><td>(iv)</td><td>Pseudocoelomata :</td><td><i>Aschelminthes</i>/Roundworms</td></tr><tr><td>(v)</td><td>Eucoelomata :</td><td>Annelids to Chordates</td></tr></tbody></table>

Question 14 :
Which of the following is not a characteristic feature of all chordates?

Question 15 :
Match the following list of animals with their level of organization.<table class="wysiwyg-table"><tbody><tr><td>Division of Labour</td><td>Animal</td></tr><tr><td>A. Organ level</td><td>i. Pheritima</td></tr><tr><td>B. Cellular aggregate level</td><td>ii. Fasciola</td></tr><tr><td>C. Tissue level</td><td>iii. Spongilla</td></tr><tr><td>D. Organ system level</td><td>iv. Obelia</td></tr></tbody></table>Choose the correct match showing division of labour with animal example.<br>

Question 18 :
Animals whose bodies are made of two layers are also called&#160;<br/>

Question 20 :
Most of the animals which can be divided into two equal halves by only two planes included in the phylum

Question 21 :
Body cavity is the cavity present between body wall and gut wall. In some animals the body cavity is not lined by mesoderm. Such animals are called ________________.<br/>

Question 24 :
Which of the following are correct?<br/>(i) Sponges : Cellular level of organisation<br/>(ii) Cnidaria : Tissue level of organisation<br/>(iii) Platyhelminthes : Organ level of organisation<br/>(iv) Annelids, Arthropods, Molluscs, Echinoderms and Chordates : Organ system level of organisation.<br/>

Question 25 :
Consider the following statements with two blanks X and Y and select the option which correctly fills up these blanks? In the centre of the inter vertebrel disc, a soft area is present called ______ X __________. Which is supposed to be remnant of ________ Y _________.<table class="wysiwyg-table"><tbody><tr><td>X</td><td>Y</td></tr><tr><td>(a) Nucleus pulposus</td><td>Notocord</td></tr><tr><td>(b) Nerve cord</td><td>Notocord</td></tr><tr><td>(c) Pulposus</td><td>Notocord</td></tr><tr><td>(d) Notocord</td><td>Nerve cord</td></tr></tbody></table>

Question 31 :
Read the following statements:<br/>i) Spider and mosquito possess compound eye<br/>ii) Jelly fishes possess cnidoblasts but comb-jelliesnlack them.<br/>iii) Aphids increase crop yield<br/>iv) All animals having true coelom are characterized by the presence of bilateral symmetry usually , tube -within-tube body plan, presence of mesoderm and true segmentation<br/>v) The animals of the phylum porifera have originated from colonial protozoans.<br/><br/>Which of the above statements are correct?<br/><br/>

Question 36 :
Which of the following statement can be related to mesogloea and mesoderm?

Question 37 :
Match the following list of animals with their level of organization and choose the correct sequence:<table class="wysiwyg-table"><tbody><tr><td></td><td>Column - I</td><td></td><td>Column - II</td></tr><tr><td>(A)</td><td>Organ level</td><td>(P)</td><td><i>Pheritima</i></td></tr><tr><td>(B)</td><td>Cellular aggregate level</td><td>(Q)</td><td><i>Fasciola</i></td></tr><tr><td>(C)</td><td>Tissue level</td><td>(R)</td><td><i>Spongilla</i></td></tr><tr><td>(D)</td><td>Organ system level</td><td>(S)</td><td><i>Obelia</i></td></tr></tbody></table>

Question 38 :
Which of the following is not a trend seen in the evolution of animals?