Question 1

Sitting beside a stream in Olympic National Park,you see a dragonfly perching on a piece of grass next to the water.You can easily see its hard,jointed exoskeleton,its three pairs of jointed legs,and its three-part body.You know,therefore,that it is a(n)

Accepted Answer

Dragonflies are both arthropods and insects. Arthropods are characterized by their hard exoskeleton, jointed legs, and segmented bodies, which includes insects. Insects specifically have three pairs of jointed legs and a body divided into three parts: the head, thorax, and abdomen, all of which apply to a dragonfly.

Question 2

All animals are descended from a(n)

Accepted Answer

The most widely accepted theory is that all animals are descended from a common ancestor that was a protist. This protist was likely unicellular and heterotrophic, meaning it obtained its food by consuming other organisms. Over time, this ancestor gave rise to a variety of different lineages, including sponges, cnidarians, mollusks, arthropods, chordates, and more.

Question 3

An example of a cnidarian is a

Accepted Answer

Cnidarians are a group of animals that includes jellyfish, which are known for their distinctive radial symmetry and stinging cells called cnidocytes. Clams, flatworms, slugs, and sea sponges are not cnidarians.

Question 4

Explain the role of fungi in an ecosystem.What would happen if fungi were not present?

Accepted Answer

The answer of Explain the role of fungi in an...

Question 5

All of the following are characteristics of insects,EXCEPT

Accepted Answer

Insects do not have an endoskeleton, which is an internal skeleton. They have an exoskeleton, which is an external skeleton made of chitin. Therefore, the statement "they have an endoskeleton" is not a characteristic of insects.

Question 6

Which is NOT true of yeast?

Accepted Answer

Yeast are unicellular and not multicellular organisms.

Question 7

Fungi are members of the domain

Accepted Answer

Fungi are eukaryotes, meaning they have a nucleus and other membrane-bound organelles. Therefore, they belong to the domain Eukarya along with animals, plants, and other organisms with similar characteristics. The other options (Bacteria, Protista, Archaea, Monera) are all domains that do not include fungi.

Question 8

Walking through Olympic National Park,you find a soft-bodied animal with no shell under some moist leaves.It is a(n)

Accepted Answer

Mollusks and annelids can both be soft-bodied and lack a shell, such as slugs (a type of mollusk) and earthworms (a type of annelid). Without more specific information about the animal's characteristics, it's impossible to definitively categorize it as one or the other.

Question 9

Circle the correct word to indicate which evolved or appeared first.
A. asymmetric or radial
B. bilateral or radial
C. bilateral or asymmetric
D. jellyfish or sponges
E. flatworms or roundworms
F. jellyfish or flatworms 
G. animals or protists 
H. vertebrate or invertebrate

Accepted Answer

The answer of Circle the correct word to indicate which...

Question 10

One of the first flea-control medicines designed for dogs and cats was a product called Program.This medication was given orally and worked to inhibit chitin formation.Why was this an effective treatment for fleas?

Accepted Answer

The answer of One of the first flea-control medicines designed...

Question 11

A clam is an example of a(n)

Accepted Answer

Clams belong to the phylum Mollusca, which includes organisms with soft bodies and a hard, protective shell, such as snails, squid, and octopuses. They are not annelids (segmented worms), cnidarians (jellyfish, coral), arthropods (insects, spiders), or echinoderms (starfish, sea urchins).

Question 12

In the blank next to each animal,write the number corresponding to the group it belongs to.Note that the same answer may be used more than once.

Accepted Answer

The answer of In the blank next to each animal,write...

Question 13

Fungi are found

Accepted Answer

Fungi are found on, in, and under vegetation, on and in animals, in and on top of soil, and in dead trees and animal carcasses. Therefore, all of the above choices are correct.

Question 14

All of the following are TRUE of insects,EXCEPT

Accepted Answer

Insects have an exoskeleton made of protein and chitin, not an endoskeleton.

Question 15

Which of the following statements is TRUE?

Accepted Answer

The ecological principle of biodiversity states that there are generally more species at lower trophic levels (where the prey species are) compared to higher trophic levels (where the predator species are). This means that there are typically more prey species than predator species in an ecosystem.

Question 16

Walking past a pond in Olympic National Forest,you spot the head of an animal that is swimming through the water.You can clearly see that the animal has fur but can't see anything else.Based on your observation,you know that the animal is a

Accepted Answer

The presence of fur indicates that the animal is a mammal, and all mammals are vertebrates (having a backbone), making the correct answer that the animal is both a vertebrate and a mammal.

Question 17

These single-celled fungi can ferment sugars or cause disease.

Accepted Answer

Yeast are single-celled fungi that are commonly used in baking and brewing to ferment sugars. They are also responsible for causing infections such as thrush and yeast infections. Shelf fungi, molds, truffles, and mushrooms are all types of fungi, but they do not typically ferment sugars or cause disease in the same way that yeast does.

Question 18

As you rest on a rock in a subalpine meadow in Olympic National Park,you see a small,hard-bodied animal next to your rock.On closer examination,you see that it has a hard,jointed exoskeleton and four pairs of jointed legs.It is a(n)

Accepted Answer

The animal described has a hard, jointed exoskeleton and four pairs of jointed legs, which are defining characteristics of arthropods. Choice A (mollusk) is incorrect because mollusks have soft bodies, not hard exoskeletons. Choice B (annelid) is incorrect because annelids are segmented worms, which do not have hard exoskeletons or jointed legs. Choice D (insect) is incorrect because while insects are a type of arthropod, they have three pairs of legs, not four pairs. Choice E is incorrect because the answer can be simply stated as choice C.

Question 19

The chordate group includes these animals.

Accepted Answer

Chordates are a phylum of animals that includes vertebrates, which are characterized by having a notochord, dorsal nerve cord, pharyngeal slits, and a post-anal tail at some point in their development. Arthropods, mollusks, invertebrates, and cnidarians are all separate phyla with different characteristics and do not belong to the chordate group.

Question 20

Fungi play a crucial ecological role in all terrestrial ecosystems,including those in Olympic National Park.What is that role?

Accepted Answer

Fungi are decomposers, breaking down dead organisms and helping to recycle their nutrients. They play a crucial ecological role in all terrestrial ecosystems, including those in Olympic National Park by cycling nutrients back into the ecosystem. Other choices are not correct as fungi are not photosynthesizers, they are not important fermenters used by humans to make foods and beverages, and they are not a primary food source for vertebrate consumers.

Quiz 19: A: Eukaryotic Diversity Rain Forest Riches