Unit 4 pt 2

Question 1

Logistical Growth pattern (s-curve)

Answer 1

Seen in populations that have had a comeback growth over time. These populations usually reproduce sexually and could have a past close to extinction or where their population was hunted)

• Has a carrying capacity. If carrying capacity reaches limit and resources are being taken up population will begin to decrease.

Question 2

Exponential growth (j-curve)

Answer 2

The pattern of population growth that results from a lack of carrying capacity (no limits)

Ex: asexually producing bacteria

Question 3

Intraspecific

Answer 3

Competition that happens within a species.

(Species traveling together and not getting along)

Question 4

Interspecific

Answer 4

Competition that occurs outside a species

(Trying to escape each other)

Question 5

R-selected qualities

Answer 5

• Small body size
• Reproduce quickly
• Short lifespan

Ex: Lice, bacteria
(Remember lice is scary like an R-rated movie)

Question 6

K-selected

Answer 6

• Long lifespan
• Late reproductive age
• Large body size

Ex: Humans, elephants, Kangaroos, Kowalas

Question 7

Density-Independent factors

Answer 7

Factors outside of an organism’s control

Ex: Floods, droughts, and any other environmental factors.

Question 8

Density- Dependent factors

Answer 8

Factors that directly impact an organism

Ex: diseases, population,

Question 9

Types of symbiotic relationships

Answer 9

species who occupy the same niche and have evolved to rely on each other

1) Mutualism ( both populations benefit from the relationship)

2) Parasitism (One population benefits/increases while one stays the same)

3) Commensalism (One population grows and then they both maintain population sizes)

Question 10

Succession (2 types)

Answer 10

primary succession= Starting from scratch
Secondary success Starting over after a disaster