Classification and Dichotomous Key

8A Students examine images of a certain species of bat commonly found in Texas. Using the bat dichotomous key, they conclude that the bat species is a Mexican free-tailed bat due to its large, round ears. Based on the dichotomous key, in addition to the shape of the bat’s ears, which other set of features should the students look for to confirm the identity of the bat?

• Solitary with a wingspan greater than 35 cm

• Solitary with a wingspan less than 35 cm

• Colonial with a wingspan greater than 35 cm

• Colonial with a wingspan less than 35 cm

  Biology

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8 (C ) A researcher determines an organism to be eukaryotic, unicellular, and autotrophic. In which taxonomic group should this organism be classified?

• Bacteria

• Protista

• Archaea

• Animalia

8 (B) The taxonomic classifications of four species of amphibians are shown. Based on the information provided, which two species are most closely related?

• Northern cricket frog and bullfrog

• Northern leopard frog and green treefrog

• Northern cricket frog and green treefrog

• Northern leopard frog and bullfrog

Tags

NGSS.MS-LS4-2

8(A) Two scientists want to compare their research of fireflies. Which information must the two scientists provide to each other to determine if they studied the same type of fireflies?

• Size of the firefly populations

• Type of habitat in which the fireflies live

• Color of light produced by the fireflies

• Species name of the fireflies studied

8 (B) A dichotomous key of different mollusks is shown. Which mollusk moves by jet propulsion and does not have an external shell?

• Squid

• Slug

• Nautilus

• Snail

8(A) Why is it important to assign each organism a scientific name?

• Each scientific name applies to only one species, making it universally identifiable to scientists.

• Each scientific name allows scientists to better study the behavior of an organism.

• The scientific name allows scientists to develop common names for organisms.

• The scientific name describes how an individual looks relative to others of the same genus.

8(B) The table shows the classification of four mammals found in Texas. Based on this table, which explanation best describes why elk and fallow deer are classified in the same genus?

• They are both in family Cervidae and share a more recent common ancestor.

• They mate and produce fertile offspring

• They live in similar habitats.

• They are both in kingdom Animalia and have similar diets

Tags

NGSS.MS-LS4-2

8 (C) Which characteristic do all organisms in Kingdoms Animalia, Protista, and Fungi have in common?

• They are eukaryotic.

• They are prokaryotic.

• They are unicellular

• They are multicellular

Tags

NGSS.MS-LS4-2

8(C) A team of students encounters an unknown organism in a field while conducting a biodiversity study. Some students think the organism is a plant, while others think it is a fungus. Which question should the students investigate to classify the organism correctly?

• Is there a cell wall around the cells of the organism?

• G Does the organism perform photosynthesis?

• Is there nervous tissue present in the organism?

• Does the organism reproduce sexually?

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-6

8 (C) A dichotomous key for identifying fish is shown. Based on this key, which two fish have eyes located on either side of their head and are not spotted?

• Glassy sweeper and squirrelfish

• Glasseye snapper and spotted eagle ray

• Spotted goatfish and bandtail puffer

• Peacock flounder and glassy sweeper