Lab Quiz: Effects of Nonliving Factors on Populations

Review your lab data. Which abiotic factor has changed significantly in Ecosystem A?

• salinity

• pH

• nitrate concentration

What do you predict will happen to the cyanobacteria population in Ecosystem A?

• increase

• decrease

• stay stable

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Why is nitrate concentration important for cyanobacteria?

• It is a source of carbon which is a nutrient they need.

• It is a source of phosphorus which is a nutrient they need.

• It is a source of nitrogen which is a nutrient they need.

• It is not important for cyanobacteria.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Review your lab data. Which abiotic factor has changed significantly in Ecosystem B?

• salinity

• pH

• nitrate concentration

Tags

NGSS.MS-LS2-4

Within what pH range do yellow perch survive best in Ecosystem B?

• 0–13 ppt

• 19–26°C

• 4.0–9.5

• Unknown

Tags

NGSS.MS-LS1-5

Based on changes to the water in Ecosystem B, what do you predict will happen to the yellow perch population?

• increase

• decrease

• stay stable

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Review your lab data. Which abiotic factor has changed significantly in Ecosystem C?

• salinity

• pH

• nitrate concentration

Tags

NGSS.MS-LS2-4

Review your lab data. How has the salinity in Ecosystem C changed from 40 years ago to the current data?

• It has increased from 0 ppt to 8 ppt

• It has decreased from 8 ppt to 0 ppt

• It has remained the same at 8 ppt

• It has increased from 8 ppt to 30 ppt.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

What is the salinity range that zander can tolerate in Ecosystem C?

• 0–8 ppt

• 10.4–26.9°C

• 6.5–8.2

• unknown

Tags

NGSS.MS-LS2-4

Based on changes to the water in Ecosystem C, what do you predict will happen to the zander population?

• increase

• decrease

• stay stable

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4