Download Answer Key Introduction to Ecology Study Guide Chapter 1: Marking

Answer Key
Introduction to Ecology Study Guide
Chapter 1: Marking Period 3
1. Claws, teeth, keen vision, quick, swift, strength
2. Mimicry, camo, poison, smell, agile, eyes on side to hide
3. Space, Water, Food, Weather
4. A role or task of species in ecosystem
5. Fish leaving coral reef for algae to eat
6. Population is one species in an area- herd of bison
7. A barnacle hitching a ride on a whale’s fin
8. Protection, Food, Water, and Mates
9. A trait a species is born with to help it thrive
10. The first organism to inhabit an area. Examples- moss, lichen
11. The struggle between two species for limiting factors
12. Carrying Capacity
13. Number of Individuals/ Area squared
14. 38 pheasants
15. Between 1974-1982 the population decreased
16. Point B in 1974 the population was 50 pheasants
17. The rapid decrease could be caused by a rise in predators, extreme
weather, or human destruction
18. The pheasants would either emigrate or expire if their habitat was
decimated by humans building a hotel.
19. The smallest level of ecology is an organism. Example- bison, lilypad, prarie
dog
20. Hawks, salamanders, oak trees
21. Sunlight, soil, oxygen, weather, and water
22. Soil is abiotic or nonliving. This is because it does not complete all features
of life. For example it does not breath, eat, or reproduce.
23. Predators eating the vegetation, natural disaster destroying ecosystem,
overcrowding, or humans tearing down area
24. Shelter and Food these provide nutrients and protection
25. Lilypads are a population or all the members on one species in a given
area.
26. A population and community are different. A community is many species
in area, a population is one species in an area.
27. 80 Flamingos/ 5 meters squared= 16 flamingos/meter squared
28. Succession is the series of changes in an ecosystem. Secondary
succession occurs after human deforestation or forest fire. Where the land
is damaged but not destroyed. Soil is still present and plants can grow
back in 100 year time. Primary succession occurs after a natural disaster
for example a volcanic eruption. The eruption destroys and decimates an
ecosystem. The organisms emigrate or expire and soil has to form from
eroding rock and decaying life. As you can see succession can be
classified in two ways.
29. VARIED ANSWERS. JUSTIFY YOUR CHOICE.
30. Scenario 1- parasitism the tick is harming the human
Scenario 2- Mutualism the bacteria gets a habitat and the human body
makes vitamin K
Scenario 3- Commensalism the human does not need the bacteria to
clean its skin cells, the body does that naturally. The bacteria have a
snack while the human is unharmed.