Animal Kingdom Questions

Match the following columns and select the correct option.
| Column - I | Column - II |
| :--- | :--- |
| (a) Gregarious, polyphagous pest | (i) Asterias |
| (b) Adult with radial symmetry and larva with bilateral symmetry | (ii) Scorpion |
| (c) Book lungs | (iii) Ctenoplana |
| (d) Bioluminescence | (iv) Locusta |

Which of the following statements are true for the phylum-Chordata?
(a) In Urochordata notochord extends from head to tail and it is present throughout their life.
(b) In Vertebrata notochord is present during the embryonic period only.
(c) Central nervous system is dorsal and hollow.
(d) Chordata is divided into 3 subphyla: Hemichordata, Tunicata and Cephalochordata.

Match the following columns and select the correct option.
| Column - I | Column - II |
| :--- | :--- |
| (a) 6 - 15 pairs of gill slits | (i) Trygon |
| (b) Heterocercal caudal fin | (ii) Cyclostomes |
| (c) Air Bladder | (iii) Chondrichthyes |
| (d) Poison sting | (iv) Osteichthyes |

Bilaterally symmetrical and acoelomate animals are exemplified by: