Q. No.Triploblastic organization, bilateral symmetry but lack of coelom will be seen in:
1.
Planaria
2.
Pheretima
3.
Periplaneta
4.
Pinctada
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The number of correct statements regarding hemichordates from the given is:
| I. | A stomochord is present in the collar region |
| II. | Circulation is of open type |
| III. | Excretory organ is proboscis gland |
| IV. | Development is indirect |
| 1. | 1 | 2. | 2 |
| 3. | 3 | 4. | 4 |
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Body cavity is the cavity present between body wall and gut wall. In some animals, the body cavity is not lined by mesoderm. Such animals are called
| 1. | Acoelomate | 2. | Pseudocoelomate |
| 3. | Coelomate | 4. | Haemocoelomate |
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Icthyophis is a/an:
| 1. Tunicate chordate | 2. Flightless bird |
| 3. Limbless amphibian | 4. Egg-laying mammal |
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Pinworm, Hookworm, and Filaria worm belong to:
| 1. | Annelida | 2. | Platyhelminthes |
| 3. | Aschelminthes | 4. | Arthropoda |
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Euplectella [Venus Flower Basket], shown in the figure below, belongs to:
| 1. | Porifera | 2. | Cnidaria |
| 3. | Ctenophora | 4. | Platyhelminthes |
Flame cells are excretory structures seen in:
| 1. | Platyhelminthes | 2. | Annelids |
| 3. | Arthropods | 4. | Cnidarians |
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Insects are not characterized by:
1. The main body segments – head, thorax and abdomen
2. Three pairs of legs
3. Two pairs of antennae
4. Excretion by Malpighian tubules
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