AP Bio Ch 33 Outline Quiz
Ch 33 Outline Quiz Introduction to Invertebrates
- 1.
Which of the following is NOT a characteristic of all animals?
- A.
They ingest food.
- B.
They produce gametes by meiosis.
- C.
They reproduce asexually by mitosis.
- D.
Food is digested in a central cavity.
- E.
The adult form is diploid in a diplontic life cycle.
Correct Answer
C. They reproduce asexually by mitosis.Explanation
The characteristic that is NOT common to all animals is the ability to reproduce asexually by mitosis. While animals can reproduce both sexually and asexually, not all animals have the ability to reproduce asexually through mitosis. Some animals, such as certain species of worms or starfish, have the capability to regenerate through asexual reproduction, but this method is not common to all animals.Rate this question:
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- 2.
Animals that have three layers of embryonic tissue and have one solid mass of tissue rather than tissues and organs nestled inside a body cavity are
- A.
Acoelomate.
- B.
Eucoelomate.
- C.
Pseudocoelomate.
- D.
Quasicoelomate.
- E.
Coelomate.
Correct Answer
A. Acoelomate.Explanation
Animals that have three layers of embryonic tissue and have one solid mass of tissue rather than tissues and organs nestled inside a body cavity are acoelomate.Rate this question:
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- 3.
Animals that have three layers of embryonic tissue but have organs in a cavity that is not completely lined with mesoderm are
- A.
Acoelomate.
- B.
Eucoelomate.
- C.
Pseudocoelomate.
- D.
Quasicoelomate.
- E.
Coelomate.
Correct Answer
C. Pseudocoelomate.Explanation
Animals that have three layers of embryonic tissue but have organs in a cavity that is not completely lined with mesoderm are pseudocoelomate. This means that their body cavity, called a pseudocoelom, is partially lined with mesoderm and partially lined with endoderm. Unlike coelomates, which have a body cavity completely lined with mesoderm, pseudocoelomates have a less developed body cavity. This arrangement allows for limited movement and support of organs within the body. Examples of pseudocoelomates include roundworms and rotifers.Rate this question:
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- 4.
Animals that have three layers of embryonic tissue with organs in a cavity that is completely lined with mesoderm are
- A.
Acoelomate.
- B.
Eucoelomate.
- C.
Pseudocoelomate.
- D.
Quasicoelomate.
- E.
Coelomate.
Correct Answer
E. Coelomate.Explanation
Animals that have three layers of embryonic tissue with organs in a cavity that is completely lined with mesoderm are called coelomate. The term "coelom" refers to the body cavity that is formed within the mesoderm layer during embryonic development. This body cavity allows for the development and organization of internal organs. In coelomate animals, this cavity is completely lined with mesoderm, which is one of the three primary germ layers. This lining of mesoderm is important for the proper development and functioning of the organs within the body cavity.Rate this question:
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- 5.
Coelomates that develop with the blastopore becoming the mouth are
- A.
Gastrocoelomate.
- B.
Blastocoelomate.
- C.
Protostomes.
- D.
Deuterostomes.
- E.
Triploblastic.
Correct Answer
C. Protostomes.Explanation
Protostomes are coelomates that develop with the blastopore becoming the mouth. In protostomes, the blastopore develops into the mouth during embryonic development. This is in contrast to deuterostomes, where the blastopore becomes the anus. Gastrocoelomate refers to animals with a coelom that is derived from the archenteron, while blastocoelomate refers to animals with a coelom that is derived from the blastocoel. Triploblastic refers to animals with three germ layers (ectoderm, mesoderm, and endoderm).Rate this question:
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- 6.
A sponge actually feeds by
- A.
Acting as a net in a current that sweeps food particles through it.
- B.
Squeezing the spongocoel cavity and sucking debris in and out through the osculum.
- C.
The beating of the flagella of collar cells, forming a current; food is absorbed by collar cells.
- D.
The beating collar cells form a current from osculum to pores; the food is engulfed by amoebocytes in the central cavity of the sponge.
Correct Answer
C. The beating of the flagella of collar cells, forming a current; food is absorbed by collar cells.Explanation
The correct answer is the beating of the flagella of collar cells, forming a current; food is absorbed by collar cells. This is because collar cells, also known as choanocytes, have flagella that beat to create a water current. This current brings in food particles, which are then absorbed by the collar cells for feeding.Rate this question:
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- 7.
Which of the following are NOT cnidaria?
- A.
Corals
- B.
Planaria
- C.
Sea anemones
- D.
Hydrozoa
- E.
Portuguese man-of-war
Correct Answer
B. PlanariaExplanation
Planaria are not cnidaria because they belong to the phylum Platyhelminthes, not Cnidaria. Cnidaria is a phylum that includes organisms like corals, sea anemones, hydrozoa, and Portuguese man-of-war, which have specialized stinging cells called cnidocytes. Planaria, on the other hand, are flatworms that do not possess these cnidocytes. Therefore, planaria are not classified as cnidaria.Rate this question:
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- 8.
Planaria feed by
- A.
Attaching with a sucker(s) and extracting blood.
- B.
Tearing and sucking food particles via a mid-belly dead-end tube.
- C.
Slurping food particles through a mouth and excreting waste via an anus.
- D.
Soaking all nutrients from the environment through its thin epidermal surface.
Correct Answer
B. Tearing and sucking food particles via a mid-belly dead-end tube.Explanation
Planaria are flatworms that feed by tearing and sucking food particles via a mid-belly dead-end tube. This means that they use their mouth to tear apart food particles and then suck them into their digestive system through a tube that ends in a dead-end. This method allows them to consume and digest their food efficiently.Rate this question:
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- 9.
In flame cells,
- A.
Light is detected.
- B.
Ciliated sperm are stored.
- C.
Undigested food is expelled.
- D.
Slow fires actually burn food for energy.
- E.
Cilia drive fluids through tubules for excretion.
Correct Answer
E. Cilia drive fluids through tubules for excretion.Explanation
Flame cells are specialized cells found in flatworms that function in excretion. These cells have tiny hair-like structures called cilia that create a current, driving fluids through tubules for excretion. This process helps filter waste materials from the body and maintain osmotic balance. The other options mentioned in the question, such as light detection, storing sperm, expelling undigested food, and burning food for energy, are not related to the function of flame cells.Rate this question:
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- 10.
The head region of a tapeworm is called the
- A.
Proglottid.
- B.
Cercaria.
- C.
Sporocyst.
- D.
Scolex.
- E.
Glycocalyx.
Correct Answer
D. Scolex.Explanation
The head region of a tapeworm is called the scolex. The scolex is equipped with hooks and suckers that allow the tapeworm to attach itself to the host's intestinal wall. It is responsible for anchoring the tapeworm in place while it absorbs nutrients from the host. The proglottid is the body segment of the tapeworm, while cercaria and sporocyst are stages in the life cycle of certain parasites. Glycocalyx is a protective layer found on the surface of some cells.Rate this question:
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- 11.
The segments of a tapeworm consisting primarily of eggs, which hang in bags as a long chain behind the head, are called
- A.
Proglottids.
- B.
Cercariae.
- C.
Sporocysts.
- D.
Scolexes.
- E.
Glycocalyxes.
Correct Answer
A. Proglottids.Explanation
The segments of a tapeworm that contain primarily eggs and are arranged in a long chain behind the head are called proglottids. These proglottids are responsible for producing and releasing eggs into the environment, allowing the tapeworm to reproduce and spread. Cercariae, sporocysts, scolexes, and glycocalyxes are not terms used to describe the segments of a tapeworm.Rate this question:
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- 12.
Elephantiasis is an enlargement of legs, arms, scrotum, and other tissues caused by
- A.
An infection of the human coelom by Ascaris.
- B.
A large number of Trichinella worms encysting in our muscles.
- C.
Contracting a disease that usually occurs in elephants.
- D.
Microscopic roundworms that reproduce and clog lymph glands, causing limbs to swell.
- E.
A protozoan that lives in tropical roundworms and, when ingested by humans, causes muscles to bloat.
Correct Answer
D. Microscopic roundworms that reproduce and clog lymph glands, causing limbs to swell.Explanation
Elephantiasis is a condition characterized by the enlargement of limbs and other tissues. The correct answer states that it is caused by microscopic roundworms that reproduce and clog lymph glands, leading to swelling of the limbs. This explanation aligns with the known cause of elephantiasis, which is the parasitic infection of the lymphatic system by filarial worms. These worms obstruct the flow of lymph fluid, causing the affected body parts to swell.Rate this question:
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Mar 21, 2023Quiz Edited by
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Apr 27, 2009Quiz Created by
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