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

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 3

Fungi are members of the domain

Accepted Answer

Fungi are eukaryotic organisms, meaning they have a true nucleus and membrane-bound organelles. The domain Eukarya includes all organisms that have this cellular structure, including fungi, animals, plants, and protists. Bacteria and Archaea are both domains of prokaryotic organisms, lacking a true nucleus and membrane-bound organelles. Monera is an outdated kingdom that included all prokaryotic organisms.

Question 4

All animals are descended from a(n)

Accepted Answer

The current scientific consensus is that all animals are descended from an ancestral protist. This protist is thought to have lived around 800 million years ago and was likely a single-celled eukaryotic organism. Through evolution, this ancestral protist gave rise to the diverse array of animal species that exist today.

Question 5

All of the following are characteristics of insects,EXCEPT

Accepted Answer

Insects do not have an endoskeleton. Instead, they have an exoskeleton made of chitin that covers and protects their body.

Question 6

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 7

The chordate group includes these animals.

Accepted Answer

Chordates are defined by the presence of a notochord, dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail. Only vertebrates, such as fish, amphibians, reptiles, birds, and mammals, possess all of these characteristics and are therefore considered chordates. Arthropods, mollusks, invertebrates, and cnidarians do not possess all of these characteristics and are therefore not considered chordates.

Question 8

A clam is an example of a(n)

Accepted Answer

A clam belongs to the phylum Mollusca, which includes organisms with soft bodies and hard shells, such as snails, squids, and octopuses. Clams are bivalves, meaning they have two shells hinged together. They are not annelids (segmented worms), cnidarians (jellyfish and corals), arthropods (insects and crustaceans), or echinoderms (sea stars and sea urchins).

Question 9

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

Accepted Answer

Yeast is known for its ability to ferment sugars, which makes it useful in the baking and brewing industries. It can also sometimes cause disease. Shelf fungi, molds, truffles, and mushrooms do not have these characteristics.

Question 10

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 11

An example of a cnidarian is a

Accepted Answer

Cnidarians are a phylum of animals that includes jellyfish, along with corals, sea anemones, and hydras. The other choices listed are not cnidarians.

Question 12

All of the following are TRUE of insects,EXCEPT

Accepted Answer

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

Question 13

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 14

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 description matches that of an arthropod, which includes insects, spiders, crustaceans, and other joint-legged creatures.

Question 15

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 16

Which of the following statements is TRUE?

Accepted Answer

The principle of ecological pyramid states that the number of individuals at each trophic level decreases as we move up the food chain. This means that there are typically more prey species at lower trophic levels than predator species at higher trophic levels. Therefore, statement A is true. Statement B, C, and E are false. Statement D is also false as predators play a crucial role in regulating the population of prey species and maintaining a healthy ecosystem.

Question 17

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 18

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 that break down dead organisms and help recycle their nutrients. This is an important ecological role because it helps to prevent the accumulation of dead matter which can lead to nutrient depletion and reduced productivity in ecosystems. In Olympic National Park, fungi are an essential part of the forest ecosystem, breaking down dead leaves, branches, and other materials, and releasing nutrients back into the soil. This process helps to maintain the health and productivity of the forest, supporting a wide range of plant and animal life.

Question 19

Which is NOT true of yeast?

Accepted Answer

Yeast are unicellular organisms, meaning they consist of only one cell and are not multicellular.

Question 20

Fungi are found

Accepted Answer

Fungi are found in all of these places and can have a variety of roles in the ecosystem, from decomposers breaking down dead organic matter to forming beneficial relationships with plants to parasites infecting animals.

Quiz 19: B: Eukaryotic Diversity Rain Forest Riches