Clades and Dichotomy

Multiple Choice

According to the cladogram, which of the following is NOT a derived characteristic?

• light bones

• Allosaurus

• down feathers

• 3-toed foot; wishbone

Multiple Choice

According to this phylogenetic tree, which creature is the least related out of all pictured?

• Fish

• Frog

• Salamander

• Human

Multiple Choice

Which two groups of organisms have the MOST genetic DIFFERENCES?

• rotifers and nematodes

• mollusks and annelids

• mollusks and arthropods

• echinoderms and chordates

Multiple Choice

The diagram shows a cladogram of six species based on amino acid similarities. Which two species are MOST CLOSELY related.

• I and II

• II and IV

• I and V

• V and VI

Multiple Choice

A dichotomous key for trees is provided. Hikers found a tree that has large brown cones and single sharp needles. What species of tree have the hikers found?

• Juniper

• Pine

• Spruce

• Fir

Multiple Choice

What is the name of bird X?

• Certhidea

• Geospiza

• Camarhynchus

• Platyspiza

Multiple Choice

An illustration and a dichotomous key are given. What is the correct classification for this organism?

• Class Insecta
• Order Amblygygi
• Order Araneae
• Order Scorpiones

Multiple Choice

A student discovers an arachnid with a segmented abdomen, long legs, and a tail with no stinger. The student uses the dichotomous key below to identify it. Which arachnid has the student found?

• Whip Scorpion

• Wind Scorpion

• Daddy long legs

• Scorpion

Multiple Choice

Leaf S

• Eastern white pine

• balsam poplar

• sweet gum

• ginko

Multiple Choice

Which characteristics are used to identify the American Robin?

• Head color, Beak shape, and Beak Color

• Head color and Beak Color

• Beak Shape and Beak Color

• Beak Color

Multiple Choice

Using this dichotomous key, identity the name of the circled fish.

• band-tail puffer

• spotted goat fish

• peacock flounder

• trumpet fish