7th Grade Unit 04 Test

Breeders have developed a variety of chicken that has no feathers. Which of the following methods were most likely used to produce this variety?

• A. Grafting and Hybridization

• B. Regeneration and Incubation

• C. Artificial selection and Inbreeding

• D. Vegetative propagation and Binary fission 1

Galapagod Islands are home to a variety of finches. Charles Darwin observed the finches that ate insects had sharp, slender beaks; finches that ate seeds had strong, wide beaks.

According to the above information and image, beak shape in these finches is an example of--

• F. adaptation.

• G. simulation.

• H. competition.

• J. environmentalism.

A Texas rancher wants to raise award winning "Texas Longhorns". He chooses a bull that has the desired traits of long horns and long legs. The rancher mates the bull with only cows that have the same traits. What is this practice called?

• A. natural selection

• B. selective breeding

• C. genetic resistance

• D. artificial selection

Based on the Dichotomous Key, which type of tree is this sample from?

• F. Ginkgo

• G. Honey locust

• H. Horse chestnut

• J. Black maple

According to the dichotomous key, what would be the scientific name for a bald eagle?

• A. Desmodus rotundus

• B. Struthio camelus

• C. Haliaeetus leucocephalus

• D. Cuora Amboinensis

Based on the dichotomous key, in what order should this insect be classified?

• F. Mantodea

• G. Raphidioptera

• H. Coleoptera

• J. Lepidoptera

When people exercise, they often feel thirsty and begin to sweat. It is important for people to feel thirsty when exercising because it makes them realize that they should —

• A. take a break

• B. consume liquids

• C. slow their breathing

• D. stop to eat something

• F. I, III, and IV

• G. I, II, and IV

• H. II, III, and IV

• J. I, II, III, and IV

Polar bears can be found in the Arctic tundra regions. This ecosystem is a vast plain with frigid temperatures where most of the precipitation is in the form of snow. Which of the following adaptations does not help the polar bear survive in this ecosystem?

• A. layers of fat for insulation

• B. webbed toes for swimming

• C. white fur for camouflage

• D. total herbivorous diet

Plants have different signals for attracting pollinators. It is not uncommon for the same plant to have more than one signal.Which of the following would NOT be a way in which plants attract pollinators?

• F. Presence of barbs

• G. Specific texture or pattern

• H. Strong scents

• J. Bright colors