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Choose an animal which represents a particular phylum. Briefly describe its features characteristic of its phylum including morphology, embryology, and physiology. Identify adaptations of your animal compared with other animals. If you chose a more primitive animal, identify adaptations compared with more primitive organisms outside of the animal kingdom.

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Related questions

The Cambrian explosion is a prime example of ________________.

mass extinction

evolutionary stasis

a large meteor impact

adaptive radiation

1 points

QUESTION 2

Most animals are viviparous.

True

False

1 points

QUESTION 3

The first phylum with ganglia in their nervous system are the ________________________.

Mollusca

Nematoda

Bivalvia

Platyhelminthes

1 points

QUESTION 4

The last common ancestor of all animals was probably a _____________________.

a unicellular worm

multicellular algae

flagellated protist

multicellular fungus

1 points

QUESTION 5

You are given an unknown organism to identify. It is unicellular and heterotrophic. It is motile by use of many short extensions of the cytoplasm. It has well-developed organelles and two nuclei, one large, one small. The organism is most likely to be a ______________.

foraminifera

radiolarian

ciliate

flagellate

1 points

QUESTION 6

Which of the following organisms would you expect to have the largest surface-area-to-volume ratio? Assume that all of the following are the same total length.

A mollusc

A nematode

A platyhelminth

Not enough information to determine.

1 points

QUESTION 7

If the animal is a hermaphrodite, it is said to be _______________.

dioecious

eutelic

monoecious

trioecious

1 points

QUESTION 8

A terrestrial animal species is discovered with the following larval characteristics: exoskeleton, system of tubes for gas exchange and segmentation. A knowledgeable zoologist should predict that the adults of this species would also feature ____________.

eight legs

two pairs of antennae

a sessile lifecycle

an open circulatory system

1 points

QUESTION 9

The Phylum Echinodermata exhibits metamerism.

True

False

1 points

QUESTION 10

The existence of evolutionary trends, such as increasing body sizes among horse species, is evidence that _____.

a larger volume-to-surface area ratio is adaptive in many mammals

evolution generally progresses toward some goal

evolution tends toward increased complexity or increased size

in particular environments, similar adaptations can be beneficial to more than one species

Choose one of the following topics:

1. Genetically modified organisms - Research various agricultural products currently on the market which have been genetically modified. Pick one to investigate further addressing the following questions/issues: What specifically has been modified with the product? How long has it been on the market? How much of the total genome has been modified? In general, is this product safe? Is there any way to know if you are eating this product versus the "normal" version? Should consumers be told they are consuming a genetically modified product? What do you think personally about these types of products? Would your position change if you were a vegetarian or an organic gardener, or the owner of a major food chain? List at least one source from your research.

{C}{C}{C}{C}2. Transgenic Animals- Research various transgenic animals. Pick one to investigate further addressing the following questions/issues: What is a transgenic animal? Which method was used to insert the foreign DNA? For what purpose was this animal "created"? Has it been successful? Is it currently being used to help humans? Also consider such aspects as animal suffering and animal rights. What if the animal contained human genes and ended up being consumed for food? Will this affect the overall genome of this creature in the wild? List at least one source from your research.

3. Cloning - Research cloning. Consider the following: How is the procedure done? What's the difference between reproductive cloning and therapeutic cloning? What are the pros? What are the cons? Should it be regulated? Are there currently clones in the market now? Would a clone of a dead relative or pet have the same personality? List at least one source from your research.

Choose one of the following topics:

1. Genetically modified organisms - Research various agricultural products currently on the market which have been genetically modified. Pick one to investigate further addressing the following questions/issues: What specifically has been modified with the product? How long has it been on the market? How much of the total genome has been modified? In general, is this product safe? Is there any way to know if you are eating this product versus the "normal" version? Should consumers be told they are consuming a genetically modified product? What do you think personally about these types of products? Would your position change if you were a vegetarian or an organic gardener, or the owner of a major food chain? List at least one source from your research.

2. Transgenic Animals- Research various transgenic animals. Pick one to investigate further addressing the following questions/issues: What is a transgenic animal? Which method was used to insert the foreign DNA? For what purpose was this animal "created"? Has it been successful? Is it currently being used to help humans? Also consider such aspects as animal suffering and animal rights. What if the animal contained human genes and ended up being consumed for food? Will this affect the overall genome of this creature in the wild? List at least one source from your research.

3. Cloning - Research cloning. Consider the following: How is the procedure done? What's the difference between reproductive cloning and therapeutic cloning? What are the pros? What are the cons? Should it be regulated? Are there currently clones in the market now? Would a clone of a dead relative or pet have the same personality? List at least one source from your research.

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