Basic Science : Coelenterata Ctenophora QUESTIONS AND ANSWERS :: part1 : 26 to 30
Following Basic Science multiple choice objective type questions and answers will help you in many types of 2024 job and other entrance examinations :
26.The oral cone of Hydra is called |
| Manubrium |
| Mouth |
| Osculum |
| Ostium |
27.Which is a fresh water cnidarian |
| Hydra |
| Spongilla |
| Dugesia |
| None of the above |
28.The mesolamella/mesogloea is formed by |
| Epidermis |
| Gastrodermis |
| Epidermis and gastrodermis |
| Mesoderm |
29.Perisarc is absent in Hydra because |
| It is fixed |
| It is free swimming |
| Epidermis cannot secrete it |
| None of the above |
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