Basic Science : Vertebrata Agnatha Pisces QUESTIONS AND ANSWERS :: part4 : 21 to 25
Following Basic Science multiple choice objective type questions and answers will help you in many types of 2024 job and other entrance examinations :
21.Fertilization is internal in |
| Cat Fish |
| Dog Fish |
| Frog |
| Toad |
22.Anus opens into a central chamber in vertebrates called |
| Rectum |
| Cloaca |
| Caecum |
| None of the above |
23.Endoskeleton is cartilaginous in |
| Elasmobranchs |
| Dipnoi |
| Mollusca |
| Osteichthyes |
24.Elasmobranchs lack |
| Gill slits |
| Operculum |
| Notochord |
| Placoid scales |
25.Fish vertebrates originated during |
| Devonian |
| Silurian |
| Carboniferous |
| Ordovician |
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