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WorksheetsB8B
Total questions: 12
Worksheet time: 24mins
B8B A student used a microscope to study four members of the phylum Ciliophora. Members of this phylum move when propelled by hundreds of tiny cilia.
Although these organisms belong to the same phylum, they are classified as different -
families
species
kingdoms
orders
B8B The relationships among different orders of millipedes are shown in the cladogram Based on this cladogram, which statement best describes relationships among millipede orders?
Stemmiulida is more closely related to Merocheta than Penicillata is to Merocheta
Spirostreptida is more closely related to Glomerida than Sphaerotheriida is to Glomerida .
Polyzoniida is more closely related to Glomeridesmida than Sphaerotheriida is to Glomeridesmida
Merocheta is more closely related to Glomeridesmida than Glomerida is to Glomeridesmida
B8B Simple leaves have a single leaf on a petiole, or stem, while compound leaves have more than one leaflet on a petiole. This unknown leaf can be identified using the dichotomous key. Which tree does the unknown leaf come from?
Ungnadia speciosa
Sophora secundiflora
Salix nigra
Quercus /aceyi
B8B The classifications of four trees are shown in the table.
Which two trees are the most closely related?
Taiwan beech and Taiwan catkin yew
Taiwan catkin yew and lodgepole pine
Lodgepole pine and Japanese maple
Japanese maple and Taiwan beech
B8B While visiting a national park, a student encounters an unfamiliar organism in a damp area near a body of water. The student notes that the organism is about 10 cm long, has four legs, and has a tail. The organism is black with small white spots on its smooth, moist skin. It also appears to have an internal skeletal system. To which class does the organism most likely belong?
Reptilia
Amphibia
Mammalia
Insecta
B8B This dichotomous key can be used to identify some conifers. Based on the key, which of these best describes the leaves and cones of the longleaf pine?
Needle-like straight leaves that are mostly over 25 cm long and found in clusters of three; no thorns on cones
Flattened and scale- like leaves that are mostly over 25 cm long; soft and leathery cones
Needle-like straight leaves with a length of 25 cm that are mostly found in clusters of five; thorny cones
Leaves wit h a length of 25 cm that are found in clusters of more than five; no thorns on cones
B8B Frogs and toads belong to the order Anura. The smallest organism in this order is about 7 millimeters long, while the largest member is about 30 centimeters long . Which of these lists best describes t his order?
B8B A cladogram is shown below All the animals to the right of the hagfish would have the common characteristic of -
fur
claws or nails
lungs
jaws
B8B Using a light microscope, a student identified the following characteristics of four organisms found in a sample of pond water. Based on the observations of the student, which organisms most likely belong to the taxonomic group for bacteria?
Organisms 1 and 2
Organisms 3 and 4
Organisms 1 and 4
Organisms 2 and 3
B8B The diagram shows a dichotomous key and a picture of a fruit According to the key, the fruit comes from which species of tree?
Fraxinus americana
Fraxinus nigra
Acer platanoides
Acer negundo
B8B A student collected the animal shown below on a field trip. The student used a dichotomous key and a microscope to classify the animal. How should this animal be classified?
Arthropoda
Annelida
Mollusca
Platyhelminthes
B8B Arthropods are joint-legged animals. Spiders, crabs, pill bugs, centipedes, and millipedes are examples of the many types of arthropods. Which of these arthropods are most closely related?
Arthropods of the same family
Arthropods of the same class
Arthropods of the same genus
Arthropods of the same species
