Identification - Dichotomous Keys
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An illustration of two fish is provided. Which paired statements could be used to know the difference between the fish using a dichotomous key?
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Eyes on side of head. Eyes on top of head.
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One set of dorsal fins. Two sets of dorsal fins
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Mouth at front of head. Mouth on underside of head.
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Rounded caudal fin. Forked caudal fin.
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This quiz titled 'Identification - Dichotomous Keys' assesses the ability to use dichotomous keys for identifying different biological specimens like fish, leaves, and insects. It enhances skills in observing distinct traits to classify and differentiate species, crucial for scientific taxonomy.
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An illustration of four leaves and a dichotomous key are provided. Use the dichotomous key to identify which of the leaves is from the magnolia tree.
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Leaf 1
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Leaf 2
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Leaf 3
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Leaf 4
Correct Answer
A. Leaf 4 -
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A table of arachnid and insect characteristics is shown. Which characteristic could be used to distinguish between arachnids and insects?
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Jointed legs
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Body segments
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Presence of eyes
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Presence of antennae
Correct Answer
A. Presence of antennaeExplanation
The presence of antennae could be used to distinguish between arachnids and insects. Arachnids, such as spiders, scorpions, and ticks, do not have antennae, while insects, such as beetles, flies, and bees, typically have antennae. Therefore, the presence or absence of antennae can be a key characteristic in differentiating between these two groups of organisms.Rate this question:
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- 4.
A scientist discovers a new plant in the jungle. Which of the following observations of the plants characteristics would be useful in determining its identity with a dichotomous key?
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It was discovered in the summertime
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It is wet from a recent rain storm
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Its leaves curl up on the edges
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It is eaten by native jungle ants
Correct Answer
A. Its leaves curl up on the edgesExplanation
The observation that the plant's leaves curl up on the edges would be useful in determining its identity with a dichotomous key because this characteristic can help differentiate it from other plants. The dichotomous key is a tool that uses a series of choices to identify an organism based on its characteristics. By noting that the plant's leaves curl up on the edges, the scientist can use this as a distinguishing feature to narrow down the options in the dichotomous key and determine the plant's identity.Rate this question:
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- 5.
An illustration of three beetles is given. A student examines three different species of beetles that are related. What structure is identical in all three beetle species?
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Antennae length
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Placement of eyes
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Markings on abdomen
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Width of thorax
Correct Answer
A. Width of thoraxExplanation
In the given illustration, the width of the thorax is the structure that is identical in all three beetle species. This means that regardless of the species, all three beetles have the same width of the thorax.Rate this question:
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- 6.
A dichotomous key is provided. A fish is caught that has eyes on the side of its head and a wide body covered in spots. What kind of fish is this?
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Cornetfish
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Flounder
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Puffer fish
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Snapper
Correct Answer
A. Puffer fishExplanation
The fish described in the question has eyes on the side of its head and a wide body covered in spots. Among the given options, the puffer fish is the most likely choice because puffer fish typically have eyes on the side of their head and their bodies are often wide and covered in spots. Therefore, the fish caught is most likely a puffer fish.Rate this question:
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- 7.
An illustration of an organism and a dichotomous key are given. What is the organism?
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Arachnid
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Dragonfly
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Fruit fly
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May fly
Correct Answer
A. DragonflyExplanation
Based on the given information, the organism depicted in the illustration is a dragonfly.Rate this question:
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.webp "An illustration of an organism and a dichotomous key are given. What is the organism?")
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Current Version
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Nov 07, 2023Quiz Edited by
ProProfs Editorial Team -
Oct 09, 2018Quiz Created by
Etate
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