Basic Science : Reptilia Creeping Vertebrates QUESTIONS AND ANSWERS :: part14 : 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.Biggest living creatures belong to |
| Mammals |
| Birds |
| Reptiles |
| Echinoderms |
22.An exclusive mammalian trait is |
| Diaphragm |
| 4-chambered heart |
| Thecondont dentition |
| Vivipary |
23.Heart of mammal is |
| Two chambered |
| Three chambered |
| Four chambered |
| One chambered |
24.Ornithorhyncus is a |
| Duck |
| Dinosaur |
| Monotreme mammal |
| A fossil bird |
25.In most mammals testes are located in scrotal sacs for |
| More space to visceral organs |
| Sex differentiation |
| Independent functioning of kidney |
| Sperm development |
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