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1 | |
The members of phylum Rotifera are cosmopolitan, which means they are found in many different habitats, and the body is made of three parts. These three parts are the |
| | A) | head, trunk, and foot. |
| | B) | head, abdomen, and tail. |
| | C) | head, neck, and body. |
| | D) | head, trunk, and tail. |
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2 | |
The members of phylum Rotifera feed by the circular motion of the |
| | A) | mastax. |
| | B) | tentacles. |
| | C) | corona. |
| | D) | front legs. |
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3 | |
The rotifers reproduce sexually by ________ eggs and asexually by ________ eggs. |
| | A) | parthenogenic, diploid |
| | B) | amictic, parthenogenic |
| | C) | fertilized, nonfertilized |
| | D) | mictic, amictic |
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4 | |
Which one of the pseudocoelomate phyla has a scaly or bristly appearance, and moves by gliding on ventral cilia? |
| | A) | Gastrotricha |
| | B) | Kinorhyncha |
| | C) | Priapulida |
| | D) | Loricifera |
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5 | |
Which one of the pseudocoelomate phyla has an eversible proboscis with curved spines and lives burrowed in the mud? |
| | A) | Gastrotricha |
| | B) | Kinorhyncha |
| | C) | Priapulida |
| | D) | Loricifera |
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6 | |
Which one of the pseudocoelomate phyla are tiny marine animals with 13 segments in the cuticle and recurved spines on the surface for locomotion? |
| | A) | Gastrotricha |
| | B) | Kinorhyncha |
| | C) | Priapulida |
| | D) | Loricifera |
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7 | |
Which one of the following pseudocoelomate phyla has members that live between sand grains and can retract their bodies into a circular lorica? |
| | A) | Gastrotricha |
| | B) | Kinorhyncha |
| | C) | Priapulida |
| | D) | Loricifera |
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8 | |
The nematodes are able to move effectively in their environment by contracting the longitudinal muscles against their ________ skeleton. |
| | A) | cartilaginous |
| | B) | hydrostatic |
| | C) | calcareous |
| | D) | bony |
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9 | |
The nematodes are unique in that motile ________ and ________ are completely lacking. |
| | A) | cilia, flagella |
| | B) | flagella, ocelli |
| | C) | ocelli, blood cells |
| | D) | blood cells, cilia |
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10 | |
Some of the nematodes are successful as endoparasites because their bodies are covered by a |
| | A) | layer of cilia. |
| | B) | cyst layer. |
| | C) | skin with glandular cells. |
| | D) | nonliving cuticle. |
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11 | |
Endoparasites must have high fecundity rates to compensate for the complex transmissions between hosts. In the nematodes, this is partially accomplished by |
| | A) | males that make lots of sperm. |
| | B) | females that leave lots of eggs in the host. |
| | C) | females that retain zygotes in the uterus. |
| | D) | males that mate with several females. |
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12 | |
Four examples of parasitic nematodes are hookworms, filarial worms, ________, and ________ |
| | A) | tapeworms, pinworms |
| | B) | pinworms, trichina worms |
| | C) | trichina worms, ribbon worms |
| | D) | ribbon worms, tapeworms |
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13 | |
Which one of the following pseudocoelomate phyla has members that are free living as adults, and parasitic in arthropods as juveniles? |
| | A) | Nematomorpha |
| | B) | Acanthocephala |
| | C) | Priapulida |
| | D) | Entoprocta |
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14 | |
Which one of the following pseudocoelomate phyla has sessile, ciliated aquatic forms that resemble hydroid cnidarians? |
| | A) | Nematomorpha |
| | B) | Acanthocephala |
| | C) | Priapulida |
| | D) | Entoprocta |
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15 | |
According to a cladogram, the most advanced of the phyla discussed in this chapter are the |
| | A) | Nematomorpha. |
| | B) | Acanthocephala. |
| | C) | Priapulida. |
| | D) | Loricifera. |
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16 | |
Which of the following is a colloquial term for a nematomorph? |
| | A) | round worm |
| | B) | horsehair worm |
| | C) | phallus worm |
| | D) | spiny-headed worm |
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17 | |
The exception among this group with respect to having a complete digestive tract is (hint: think about their lifestyle) |
| | A) | the rotifers |
| | B) | the acanthocephalans. |
| | C) | the loriciferans. |
| | D) | the kinorhynchs. |
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