Biodiversity in Ecosystems Test

Scientists can use aerial photos, transect sampling, or canopy fogging to collect data to determine the biodiversity index of an area.

• True
• False

Sea stars are sometimes monitored to see if they show signs, or warning signals, to changes in their tide pool ecosystem. In this way, sea stars are being used as what?

• B) bioindicators
• C) species diversity
• D) invasive species

Scientist quantify biodiversity by using the biodiversity index of an area

• A) true
• B) False

There are 100 individuals in an area. In that same area, there are 40 species. What is the biodiversity index of the area?

• B) 0.4
• C) 2.5
• D) 0.04

Which of the following is a geographic area on Earth that has similar biotic and abiotic features as well as similar climates and organisms

• A) desert
• B) biome
• C) region

Which of the following is NOT a method scientists use to measure the biodiversity of an area?

• A) canopy fogging
• B) transect sampling
• C) biological control

Which of the following is NOT a method used for controlling invasive species?

• A) the use of herbicides
• C) reclamation
• D) the use of other species

Which of the following is an example of a supporting ecosystem service?

• A) nutrient cycling
• B) recreation
• D) habitat restoration

A group of students was asked to begin a project related to solutions for maintaining the biodiversity in an ecosystem. They decided to first research the topic of biodiversity and how it is measured to gather background information. Which of the following information about biodiversity is correct? Select all that apply

• A) Biodiversity describes the variety of species in an ecosystem.
• B) Biodiversity of an ecosystem is related to the ecosystem’s health.
• C) Biodiversity is related to the resources and services an ecosystem produces.
• D) Biodiversity is measured by counting the number of individual organisms and dividing by the size of the area.
• E) Small changes in biodiversity can cause large changes in an ecosystem.

Which of the following describes a taiga?

• B) exists only in the northern hemisphere
• C) treeless
• D) mostly deciduous trees