Ecology

Question 1

Hierarchy of Ecological Systems

Answer 1

1. Individual
2. Population
3. Community
4. Ecosystem
5. Biosphere

Question 2

taxis

Answer 2

movement in a specific direction toward/away from stimuli

Question 3

kinesis

Answer 3

random movement from stimuli until a favorable setting is reached

Question 4

phototropism

Answer 4

movement of a plant toward sunlight; auxins

Question 5

photoperiods

Answer 5

number of sunlight hours of a day; helps increase fitness of an organism

Question 6

photoperiods in plants

Answer 6

determines when the plant will flower

Question 7

photoperiods in animals

Answer 7

determines when animals migrate, the production of hormones

Question 8

navigation

Answer 8

orienting oneself through a long-distance; internal compass

Question 9

biological clocks

Answer 9

responding to the presence of daylight and dark:
1. sensed by retinas and info is transferred to the penial gland
2. specialized photosensitive cells to differentiate between light and dark
3. different responses to light and dark

Question 10

circadian clock

Answer 10

A 24-hour clock that helps regulate a wide range of activities

Question 11

communication

Answer 11

1. visual
2. auditory
3. chemical
4. tactile/electrical

Question 12

visual communication

Answer 12

attracting mates, signs of health, attracting pollinators

Question 13

chemical communication

Answer 13

Communication through chemical transitions (ie. scents, pheromones, etc.)

Question 14

auditory communication

Answer 14

Communicating through noise. (ie. warning/mating calls)

Question 15

tactile/electric communication