Unit 8: Ecology

studied byStudied by 1911 people
4.4(37)
get a hint
hint

Phototropism

1 / 28

Tags and Description

29 Terms

1

Phototropism

________ refers to the way plants respond to sunlight- for example, bending toward light.

New cards
2

Habituation

________ is another form of learning.

New cards
3

Endotherms

________ are animals that generate their own body heat through metabolism.

New cards
4

Toxins

________ in an ecosystem are concentrated and more dangerous for animals further up the pyramid.

New cards
5

Plants

________ flower in response to changes in the amount of daylight and darkness they receive.

New cards
6

Ectotherms

________ lack an internal mechanism to control body temperature.

New cards
7

Commensalism

________- in which one organism lives off another with no harm to the host organism (for example, the remora)

New cards
8

Exponential growth

________ occurs very quickly, resulting in a J- shaped curve.

New cards
9

Thigmotropism

________ refers to the way plants respond to touch.

New cards
10

food chain

In a(n) ________, only about 10 percent of energy is transferred from one level to the next- this is the 10 % rule.

New cards
11

Biosphere

________: The entire part of the Earth where living things exist.

New cards
12

Parasitism

________- in which the organism actually harms its host.

New cards
13

Territoriality

________ is a common behavior when food and nesting sites are in short supply.

New cards
14

Instinct

________ is an inborn, unlearned behavior.

New cards
15

Lichens

________ are considered pioneer organisms.

New cards
16

chemical signals

Pheromones, are ________ between members of the same species that stimulate olfactory receptors and ultimately affect behavior.

New cards
17

Dominance hierarchies

________ (pecking orders) occur when members in a group have established which members are the most dominant.

New cards
18

Mutualism

________- in which both organisms win (for example, the lichen components)

New cards
19

Net productivity

________ measures organic materials that are left over after photosynthetic organisms have taken care of their own cellular energy needs.

New cards
20

tropism

A(n) ________ is a turning in response to a stimulus.

New cards
21

behavior brought

Learning refers to a change in a(n) ________ about by an experience.

New cards
22

maximum number of individuals

Carrying capacity- the ________ of a species that a habitat can support.

New cards
23

energy flow

The ________, biomass, and numbers of members within an ecosystem can be represented in an ecological pyramid.

New cards
24

Altruistic behavior

________ is defined as unselfish behavior that benefits another organism in the group at the individuals expense because it advances the genes of the group.

New cards
25

Population growth

________ can be represented as the number of births minus the number of deaths divided by the size of the population.

New cards
26

Exponential growth

________ occurs when a population is in an ideal environment.

New cards
27

Biosphere

The entire part of the Earth where living things exist

New cards
28

Ecosystem

The interaction of living and nonliving things

New cards
29

r = (births

deaths)/N (r is the reproductive rate, and N is the population size.)

New cards

Explore top notes

note Note
studied byStudied by 35 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 7972 people
Updated ... ago
4.8 Stars(63)
note Note
studied byStudied by 6 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 391 people
Updated ... ago
5.0 Stars(8)
note Note
studied byStudied by 424 people
Updated ... ago
5.0 Stars(2)
note Note
studied byStudied by 53 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 73 people
Updated ... ago
5.0 Stars(2)
note Note
studied byStudied by 498 people
Updated ... ago
5.0 Stars(2)

Explore top flashcards

flashcards Flashcard89 terms
studied byStudied by 13 people
Updated ... ago
5.0 Stars(2)
flashcards Flashcard120 terms
studied byStudied by 4 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard548 terms
studied byStudied by 32 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard77 terms
studied byStudied by 22 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard34 terms
studied byStudied by 140 people
Updated ... ago
5.0 Stars(3)
flashcards Flashcard20 terms
studied byStudied by 14 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard28 terms
studied byStudied by 7 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard144 terms
studied byStudied by 46 people
Updated ... ago
5.0 Stars(2)