Ecology test

A population is...

• Study of all different species
• Study of all the same species
• All the same species and abiotic factors
• An individual organism

Tags

NGSS.MS-LS2-4

The only way of knowing exact amount of organisms in a given area...

• Sampling
• Direct Observation
• Indirect Observation
• Mark and Recapture

Seeing a nest and estimating the population of birds in the area.

• Sampling
• Indirect Observation
• Mark and recapture
• direct observation

Carrying capacity of the population...

• 20
• 40
• 80
• 100

Populations grow when...

• Higher death rate than birth rate
• Higher birth rate than death rate
• Equal birth rate and death rate 

A J-shaped curve can be seen when...

• A population is growing
• A population is declining
• A population meets it's carrying capacity
• A population is migrating

A S-shaped curve can be seen when...

• A population is growing
• A population is declining
• A population meets it's carrying capacity
• A population is migrating

What would happen to the Hawk population if you removed the snake?

• Hawk population would decrease
• Hawk population would increase
• Hawk population would not be changed
• Hawk would go extinct

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

If you increased the amount of grass what would happen to the other species in the food web?

• All populations would decrease
• All populations would increase
• No change in population
• Only rabbits, mouse, and grasshopper populations would increase

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A tick sucking blood from a human... YUMMMY!!

• Commensalism
• Parasitism
• Mutualism
• Density-dependent