Protists and Fungi — Unit test Answers

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Which question is most likely to be found in a dichotomous key for identifying a tree by its leaves?

A
What is the shape of the tree’s leaves?
B
What type of birds prefer nesting in the tree?
C
Are the leaf bases attached opposite to each other on the branch?
D
Are the leaves shaped in a way that slows the evaporation of water?
2
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Which is the correct written form of the scientific name that uses the rules of binomial nomenclature?

A
Felis domesticus
B
Felis Domesticus
C
Felis domesticus
D
felis domesticus
3

Shelby is a plant breeder who is trying to identify the cause of a disease among a group of trees. She observes that the organism reproduces through spores and has reproductive structures that are shaped like a sac. Which type of fungus is it?

A
Ascomycota
B
Basidiomycota
C
Chytridiomycota
D
Zygomycota
4

Which kingdom(s) include both unicellular and multicellular organisms?

A
Plantae and Archaebacteria
B
Fungi
C
Eubacteria
D
Animalia and Plantae
5

These statements compare and contrast Ascomycota and Basidiomycota.I. Some species in both groups can cause plant diseases.II. Species from both groups can be used in making bread rise.III. All species in both groups can be used as food.IV. Ascomycota produce spores in a sac-like structure; Basidiomycota produce spores in a club-shaped structure. Which of the statements are true?

A
II and III
B
III and IV
C
I and IV
D
II and IV
6

In what respect is a mycelium and a fruiting body similar?

A
Both are made of hyphae.
B
Both are found above the ground.
C
Both produce reproductive spores.
D
Both absorb nutrients underground.
7

Ceratium fusus is a protist that is found primarily in coastal waters, especially around the coast of the United Kingdom. These organisms are unique because they can undergo a special chemical reaction at night that helps defend them against predators. It provides defense by attracting larger predators that prey on the organisms that eat Ceratium fusus. Which characteristic of Ceratium fusus is being described?

A
photosynthesis
B
glass-like cell walls
C
bioluminescence
D
chitin cell walls
8

Which reason best explains why bacteria are good at causing infections in other organisms?

A
It would not be able to divide.
B
Bacteria are transmitted easily and reproduce quickly.
C
Bacteria evolve slowly as they pass on genetic information.
D
Bacteria are easily killed by a host’s immune system or antibiotics.
9

Use this portion of a dichotomous key for tree identification to answer the question.1a. Needlelike leaf ® Step 101b. Broad leaf ® Step 22a. Compound leaf ® Step 32b. Simple leaf ® Step 77a. Leaf bases attached opposite each other on branch ® Step 87b. Leaf bases attached staggered on branch ® Step 118a. Leaves lobed ® Maple8b. Leaves not lobed ® Step 99a. Leaves heart shaped ® Catalpa9b. Leaves not heart shaped ® DogwoodWhich best describes dogwood leaves?

A
They are lobed, simple leaves and are attached staggered on the branch.
B
They are not heart shaped and are attached staggered on the branch.
C
They are compound, broad leaves and are attached oppositely on the branch.
D
They are nonlobed, simple leaves and are attached oppositely on the branch.
10

A scientist has correctly gone through all the possible steps in a dichotomous key, but has not identified an insect. Which most likely describes why he did not identify the insect?

A
The scientist must have made a mistake.
B
The insect might be an unknown variation or a new species.
C
The organism evolved during identification.
D
The dichotomous key had too many questions.
11

Which example best demonstrates the importance of having knowledge of evolutionary relationships?

A
illustration of a plant leaf
B
organ transplantation between species
C
blood donation from a human to a human
D
DNA sequence of an insect
12

Dichotomous keys are constructed based on

A
combinations of characteristics in unknown organisms.
B
combinations of characteristics in known organisms.
C
genetic sequences in known organisms.
D
genetic sequences in unknown organisms.
13

Consider the recent phylogenetic tree of five different organisms. Old classification systems based on physical characteristics would most likely disagree with the relationship between which two animals in the tree?

Question illustration
A
crocodiles and insects
B
bats and humans
C
birds and bats
D
humans and crocodiles
14

Which best describes the different modes of bacterial reproduction?

A
In genetic recombination, two new genetically identical cells are produced.
B
In conjugation, a special sex pilus is required to connect two bacterial cells.
C
In transduction, a bacterium exchanges a piece of its own DNA with another from the environment.
D
In transformation, bacterial DNA is transferred from one bacterium to another by a replicating virus.
15

Scientists group organisms into kingdoms by looking at specific characteristics. Thermus aquaticus, shown below, is a specialized bacteria called a thermophile. Thermophiles are microorganisms that can live in bodies of water that are extremely hot, such as deep sea hydrothermal vents.Which characteristic most likely describes a mushroom but not Thermus aquaticus?

Question illustration
A
cell wall
B
eukaryotic
C
unicellular
D
prokaryotic

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