Ecology Review

Competition, disease, predators/prey are examples of ______.

• Density independent factors

• Density dependent factors

• Density neutral factors

• Density aquatic factors

Tags

NGSS.MS-LS2-2

Natural disasters, temperature, human disturbance are examples of ____.

• Density dependent factors

• Density neutral factors

• Density independent factors

• Density zero factors

Praying Mantis lay up to 300 eggs in one sac. Only about 1/5 of them will survive to adulthood. There is no parental care of offspring. What type of reproductive strategy do praying mantis have?

• K-selected

• R-selected

• P-selected

• B-selected

Which of the following will cause a population size to INCREASE?

• Births & immigration

• Births & emigration

• Deaths & immigration

• Deaths & emigration

Which of the following will cause a population size to decrease?

• Births & immigration

• Births & emigration

• Deaths & immigration

• Deaths & emigration

Tags

NGSS.MS-LS2-4

Which survivorship curve is characterized by high mortality (deaths) after reproductive years?

• Type I

• Type II

• Type III

• Type IV

Which survivorship curve is characterized by very high early mortality (deaths) but those that survive remain reproductively active for entire lifespan?

• Type I

• Type II

• Type III

• Type IV

Which survivorship curve is characterized by constant mortality (deaths) throughout lifespan?

• Type I

• Type II

• Type III

• Type IV

Polar bears have 1-3 cubs. Females raise the cubs for 2-3 years. Males begin to reproduce 8-10 years of age & females at 4-6 years. Polar bears live on average 25 years in the wild. What type of reproductive strategy do polar bears have?

• K-selected

• R-selected

• P-selected

• B-selectedpo

Which type pf population growth is seen in the picture?

• Logistic growth

• Exponential growth

• Circular growth

• Negative growth