Please select a subject first
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The circulatory system has evolved from open to closed type in Animal kingdom. Which Phylum can be called first to represents closed circulation?
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Pinna is part of the external ear and it is found in mammals. Do aves and reptiles show external ear in any form?
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Fish and frog can respire in water. Can they respire through their skin? If yes, why do they have gills?
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Birds need to keep their body light to help in flying. Hence, they show presence of some organs only on one side. How their skeleton helps in reducing their weight?
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Cnidarians and Ctenophorans are both diploblastic. Which other character do they have in common, which is not found in other phyla?
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Crab and Snail both have a protective covering. Is it made up of the same material?
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Sponge and sea star show calcareous protective material. Do they belong to the same Phylum?
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Fish and snake both have scales. How do these scales differ from each other?
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Lower Phyla like Arthropods and Cnidarians show metamorphosis. Is it also found in any class of Phylum Chordata?
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Draw a neat labelled diagram.
Sycon
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Aurelia
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Amphioxus
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Draw a neat labelled diagram.
Catla
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Draw a neat labelled diagram.
Balanoglossus
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Draw a neat labelled diagram.
Scolidon
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Match the following.
| Phylum | Characters |
| i. Annelida | a. Tube feet |
| ii. Mollusca | b. Ostia |
| iii. Ctenophora | c. Radula |
| iv. Porifera | d. Parapodia |
| v. Echinodermata | e. Comb plates |
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Identify the animal given in the picture and write features of its phylum/class.
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Identify the animal given in the picture and write features of its phylum/class.
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Identify the animal given in the picture and write features of its phylum/class.
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Identify the animal given in the picture and write features of its phylum/class.
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