A scientist discovers a new plant in the jungle. Which of the following observations of the plants characteristics would be useful in determining its identity with a dichotomous key?
a. It was discovered in the summertime
b. It is wet from a recent rain storm
c. Its leaves curl up on the edges
d. It is eaten by native jungle ants
c. Its leaves curl up on the edges
An illustration of three beetles is given. A student examines three different species of beetles that are related. What structure is identical in all three beetle species?
a. Antennae length b. Placement of eyes
c. Markings on abdomen d. Width of thorax
d. Width of thorax
An illustration of four leaves and a dichotomous key are provided. Use the dichotomous key to identify which of the leaves is from the magnolia tree
Leaf 4.
A dichotomous key is provided. A fish is caught that has eyes on the side of its head and a wide body covered in spots. What kind of fish is this?
a. Cornetfish b. Flounder c. Puffer fish d. Snapper
C. Puffer fish
A table of arachnid and insect characteristics is shown. Which characteristic could be used to distinguish between arachnids and insects?
a. Jointed legs b. Body segments c. Presence of eyes d. Presence of antennae
d. Presence of antennae