Bilateral symmetry, metameric segmentation, coelom and open circulatory system are the features of
Annelida
Arthropoda
Mollusca
Echinodermata
C.
Mollusca
The members of phylum-Arthropoda show bilateral symmetry, three germ layers in body wall, external metamerism, jointed and paired appendages, haemoocel and open type of circulatory system with dorsal heart.
Branch of zoology dealing with the study of fishes is called
Arthrology
Ichthyology
Saurology
Herpetology
Chondrichthyes is characterised by
Placoid scale
Placoid scale and ventral mouth
Ventral mouth
Ctenoid scale and ventral mouth
Which of the following cells in earthworm play a role similar to liver in vertebrates?
Amoebocytes
Mucocytes
Chloragogen cells
Epidermal cells
Match the following and select the correct option.
| List I | List II |
| A. Cyclostomes | 1. Hemichordata |
| B. Ayes | 2. Urochordata |
| C. Tunicates | 3. Agantha |
| D. Balanoglossus | 4. Pisces |
| E. Osteichthyes | 5. Tetrapod |
| A | B | C | D | E |
| 3 | 5 | 2 | 1 | 4 |
| A | B | C | D | E |
| 3 | 1 | 5 | 2 | 4 |
| A | B | C | D | E |
| 1 | 2 | 3 | 4 | 5 |
| A | B | C | D | E |
| 2 | 3 | 4 | 1 | 5 |
Select incorrect pair
Porifera – Choanocytes
Coelenterata – Nematocysts
Annelida – Segmentation
Monera – Eukaryote
Correctly matched set of phylum, class and example is
Protozoa-Mastigophora-Entamoeba
Mollusca=-Bivalvia-c-Pmcrcdc
Arthropoda-Diplopoda-Scolopendra
Chordata-Cyclostomata-Phrynosoma
