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?
4

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

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

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