Lesson 4.2 Describing Populations Review

You are studying the vegetation communities of the Mongolian grasslands in a 1000-square-kilometer-area. What is your best strategy for estimating the number of individuals of different plant species growing throughout the grasslands?

• direct observation

• sampling

• indirect observation

• simply counting each one

Which is the highest population density of grasshoppers?

• 35 grasshoppers/10 square meters

• 40 grasshoppers/20 square meters

• 1 grasshopper/1 square meter

• 50 grasshoppers/30 square meters

In a population of elephants in Kenya, researchers found that about 80 percent of the elephants were female, and only 20 percent were male, resulting in an unbalanced ____________________.

• population

• sex ration

• age structure

• population density

The diagram above shows a ____________________ distribution pattern.

• random

• uniform

• clumped

The diagram above shows a ____________________ distribution pattern.

• random

• uniform

• clumped

The diagram above shows a ____________________ distribution pattern.

• random

• uniform

• clumped

In the age structure diagrams, which diagram represents a population that is likely to grow rapidly in the future?

• A

• B

• C

Tags

NGSS.MS-LS2-4

Imagine that the graphs above represent three populations of a rare species of deer, each protected in a separate wildlife refuge. Your goal as director of the wildlife refuge system is to make sure that the population of deer remains healthy or grows throughout the system. Which population is most likely to need attention?

• A

• B

• C

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

For many years, the deer species was not present in one of the wildlife refuges, even though the habitat was good. Several years ago the deer were reintroduced into this area. Which diagram represents the population that was recently reintroduced?

• A

• B

• C

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

One of these populations has reached carrying capacity. Which one is it?

• A

• B

• C

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1