Q. No.One example of animals having a single opening to the outside that serves both as mouth as well as anus is–
1. Asterias
2. Ascidia
3. Fasciola
4. Octopus
1. Asterias
2. Ascidia
3. Fasciola
4. Octopus
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Which one of the following kinds of animals are triploblastic ?
1. Sponges
2. Ctenophores
3. Corals
4. Flat worms
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Which one of the following statements about certain given animals is correct?
1. Molluscs are acoelomates
2. Insects are pseudocoelomoates
3. Flatworms (Platyhelminthes) are coelomates
4. Roundworms (Aschelminthes) are pseudocoelomates
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Which one of the following statements about all the four - Spongilla, Leech, Dolphin, Penguin - is correct?
| 1. | Leech is a freshwater form while all others are marine. |
| 2. | Spongilla has special collar cells called choanocytes, not found in the remaining three. |
| 3. | All are bilaterally symmetrical. |
| 4. | Penguin is homeothermic while the remaining three are poikilothermic. |
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Excretory pore of Ascaris is present –
1. Behind the mouth
2. On the posterior end
3. On the dorsal side
4. In the middle of the body
Which of the following match is correct?
| 1. | Cockroach | – Crustacea |
| 2. | Pila | – Pelecypoda |
| 3. | Spider | – Arachnida |
| 4. | Unio | – Gastropoda |
Infection of Ascaris usually occurs by
1. Eating imperfectly cooked pork.
2. Tse - tse fly.
3. Mosquito bite.
4. Drinking water containing eggs of Ascaris
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Which group of animals belong to the same phylum?
1. Earthworm, Pinworm, Tapeworm
2. Prawn, Scorpion, Locusta
3. Sponge, Sea anemone, Starfish
4. Malarial parasite, Amoeba, Mosquito
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Select the Taxon mentioned that represents both marine and fresh water species–
1. Echionoderms
2. Ctenophroa
3. Cephalocoradata
4.Cnidaria
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