This topic contains a solution. Click here to go to the answer

Author Question: After reading the paragraph below, answer the questions that follow.Japanese stiltgrass is an ... (Read 558 times)

HCHenry

  • Hero Member
  • *****
  • Posts: 591
After reading the paragraph below, answer the questions that follow.

Japanese stiltgrass is an invasive plant that was accidentally introduced to the United States in the early 1900s. It can be found on roadsides and in forests, and it has many impacts on native plants and animals. Biologists Jayna DeVore and John Maerz studied the effect of Japanese stiltgrass on American toads in their natural habitat. They enclosed American toads in cages with lycosid spiders and/or Japanese stiltgrass. The four treatments were (A) lycosid spiders and Japanese stiltgrass, (B) lycosid spiders without Japanese stiltgrass, (C) lycosid spiders and Japanese stiltgrass, and (D) no lycosid spiders and no Japanese stiltgrass. They compared the survival of American toads across the treatments (left graph). They also measured the density of lycosid spiders in different areas where Japanese stiltgrass was absent vs. present (right graph).


Source: DeVore, J. L., & Maerz, J. C. (2014). Grass invasion increases top‐down pressure on an amphibian via structurally mediated effects on an intraguild predator. Ecology, 95(7), 1724-1730.


What hypothesis is best supported by these results?
◦ Japanese stiltgrass increases the number of American toads by converting more solar energy to chemical energy than native plants do.
◦ Japanese stiltgrass decreases the number of American toads by reducing the food supply (insects) of the toads.
◦ Japanese stiltgrass increases the number of American toads by decreasing species diversity of native plants.
◦ Japanese stiltgrass decreases the number of American toads by increasing the amount of habitat available to a predator (lycosid spiders) of American toads.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by HCHenry on Jul 15, 2019

Missbam101

  • Sr. Member
  • ****
  • Posts: 341
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 25% of students answer this correctly




 

Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

For a complete list of videos, visit our video library