Identifying Unknown Organisms Answers

Rory is trying to identify a tree from one of its leaves. A question on the dichotomous key that he is using asks whether the leaf has 3-5 lobes or more than 5 lobes. Rory cannot tell whether the leaf in his hand has 5 or 6 lobes. What should Rory do to continue identifying the tree?

A botanist observes a large population of a particular type of beetle eating the leaves of one tree but not the leaves of a nearby tree. What should the botanist do first to study the interaction of these organisms in the ecosystem?

Observations of organisms include

Use this chart of a portion of a dichotomous key to answer the question.Dichotomous KeyWhich number on the dichotomous key represents the point of differentiation between organism X from organism Z?

A biologist is using a dichotomous key to identify fish.1. (a) Has a single dorsal fin ® 5 (b) Has a double dorsal fin ® 22. (a) One fin is spiny, the other is smooth ® 3 (b) One fin is not spiny or smooth ® 45. (a) Has small fin on back near tail ® 6 (b) Has no fin on back near tail ® 76. (a) Has barbs near the mouth ® Catfish (b) Does not have barbs near the mouth ® 107. (a) Tail is asymmetrical ® 8 (b) Tail is symmetrical ® 910. (a) Scales are small ® Trout (b) Scales are large ® WhitefishWhat is the next step to take to identify a fish that has a single dorsal fin and no fin on the back near the tail?

Which best describes a dichotomous key?

Dichotomous keys ask

A scientist wants to study the interactions of different birds in the southern part of a desert. What should the scientist do first?

Refer to this portion of a dichotomous key for fish identification to answer the question.1. (a) Has a single dorsal fin ® 5 (b) Has a double dorsal fin ® 25. (a) Has small fin on back near tail ® 6 (b) Has no fin on back near tail ® 76. (a) Has barbs near the mouth ® Catfish (b) Does not have barbs near the mouth ® 10What do the numbers after the arrows represent?

Amaya collected insects in the forest. She was unable to identify one unusual looking insect using a dichotomous key. Amaya concluded that the insect must be a new species. Which facts would support the conclusion that the insect is a new species?

A series of choices between two characteristics that is used to identify organisms is called a

The mammal pictured below is a silvery mole rat.Which statement is an inference based on the picture?

Use this dichotomous key for insect identification to identify the insect shown.1.a. Insect has one pair of wings.Order Diptera b. Insect has two pairs of wings.Go to #2 2.a. Front wings thicker in texture than hind wingsGo to #3. b. Front and hind wings are same texture throughout.Go to #4 3.a. Front wings are short Order Dermaptera b. Front wings cover entire abdomenOrder Coleoptera 4.a. Wings with scale on all parts of their area. order Lepidoptera b. Wings without scalesGo to #5. 5.a. Hind wings smaller than front wings.Order Ephemeroptera b. Front and hind wings nearly equal in size.Order OdonataThe insect pictured is in the order