Species Identification

• Nutria

• Pouched rat

• phragmites

• land snail

Tags

NGSS.MS-LS2-1

• nutria

• pouched rat

• sea lamprey

• lionfish

Tags

NGSS.MS-LS4-2

• emerald ash borer

• green crab

• nutria

• goldfish

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

When using a dichotomous key to identify organisms, what do we look at?

• physical features

• weather patterns

• environment

• diet

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Tags

NGSS.MS-LS4-4

What is a dichotomous key used for in science?

• To organize biomes

• Classify organisms

• Identify bacteria only

• None of these

There are 5 species of the Texas state flower the bluebonnet. Each flower is found in a different region of Texas and has slightly different traits. What most likely accounts for this variation?

• Natural Selection

• Selective breeding

• Genetic engineering

• Selective pollination

Tags

NGSS.MS-LS1-5

NGSS.MS-LS4-4

A table of arachnid and insect characteristics is shown. Which characteristic could be used to distinguish between
arachnids and insects?

• Jointed legs

• Body segments

• Presence of eyes

• Presence of antennae

This dichotomous key identifies 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 25 cm long and found in cluster 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

What characteristic might be used to differentiate between plant species in a dichotomous key?

• The number of branches they produce

• The geographic location where they are found

• The amount of sunlight they receive

• The shape of their leaves