Describe how protist evolution illustrates multiple evolutionary trends that have developed over time. Chose from any of mechanisms for increasing genetic diversity, nutritional diversity, or cell complexity to explain how this trend is evident in the protists, using three protist organisms or groups to explain the evolutionary trends.
Describe how protist evolution illustrates multiple evolutionary trends that have developed over time. Chose from any of mechanisms for increasing genetic diversity, nutritional diversity, or cell complexity to explain how this trend is evident in the protists, using three protist organisms or groups to explain the evolutionary trends.
For unlimited access to Homework Help, a Homework+ subscription is required.
Related textbook solutions
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 |