Classification

Organisms that are classified as autotrophic are able to-

• be seen with the human eye
• move
• reproduce
• make their own food

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

This domain contains organisms that have a true nucleus in each of their cells. This domain breaks down into four kingdoms.

• Animalia
• Archaea
• Bacteria
• Eukarya

Organisms are classified today using the Linnaean system. Taxonomic classification is important because it provides marine biologists with a way to ...

• prove that marine evolution occurred.

• discover and name every marine organism on Earth.

• designate Latin as the universal language of marine biology.

• identify marine organisms and find evolutionary relationships between them.

Why would scientists want to use a taxonomic system that is standardized?

• In order to avoid confusion with the identification of organisms.

• Because Linnaeus established a system.

• So that Latin names can be applied for a practical purpose.

• In order to place organisms in different groups.

The Linnaean taxonomic system classifies organisms into divisions called taxa. If two organisms belong to the same taxonomic group, they are related. Similarity at which of these levels indicates the closest relationship?

• Kingdom

• Class

• Order

• Genus

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 laceyi

The classifications of four trees is 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

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? (Make a common sense guess)

• Reptilia

• Amphibia

• Mammalia

• Insecta

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 with a length of 25 cm that are found in clusters of more than five; no thorns on cones

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 this order? ( I have seen a question like this twice, see if you can figure it out)

• A

• B

• C

• D